Draft of Article edit

History and Comparison edit

The domestication of small mammals is a relatively recent development, arising only after large-scale industrialization. Historically, when western society was more agrarian than it is today, rodents as a whole were seen as a nuisance, as they were carriers for disease and a threat to crops; animals that hunted these pests such as terriers and cats were prized.

Guinea Pig edit

 
Two Adult Guinea Pigs

Guinea pigs (cavy) have perhaps the longest tradition of pethood among rodents (note that rabbits are not rodents). While historically they served as a foodstuff for the native Inca people, they were imported to Europe as early as the mid-16th century, shortly after Spain conquered Peru. As an oddity from the New World, they were afforded a special status, and seen as house pets, rather than vermin or food. While their popularity was initially limited to the wealthy, their prodigious reproductive habits ensured that they spread throughout the middle classes shortly after their introduction; guinea pig burial places (not scattered bones—as would be found with an eaten animal) have been found in archaeological digs in medieval middle-class suburbs.[1]

Guinea pigs typically travel in groups, or herds, scavenging for grass and other vegetation who do not store their food. They are commonly active during dawn or dusk when they are less likely to encounter predators (crepuscular). As pack animals in the wild, the domestic Guinea pig also thrives when kept with one or more companions (except boars in the presence of a sow). They live off a diet consisting of grass hay and food pellets, typically synthesized from timothy hay. Like humans, Guinea pigs can not synthesize their own vitamin C making their food intake their only source of vitamin C; a lack of vitamin C will often cause fatal scurvy. At merely four weeks old female Guinea pigs become fertile and may produce as many as four to five liters a year. With an average gestation period of 59-72 days, a female Guinea pig may become pregnant again in as few as 6 hours prior to giving birth. Guinea pigs live to be around 4 to 5 years old.[2]

 
Pet mouse, 3 months old

Fancy Mouse edit

Fancy mice were popular pets in Japan during the 18th century, due in large part to the abundance of color mutations in wild mice. In 1787, a book on this hobby, The Breeding of Curious Varieties of the Mouse, was published by Chobei Zenya, a Kyoto money exchanger. Over time, the tradition spread from Japan to Europe, and in 1895 the National Mouse Club was established in England.[3]

Fancy mice are nocturnal animals who utilize burrowing and hiding to evade prey due to their general defenselessness. Mice also utilize burrows to avoid light when ever possible. Mice live in families with developed social structure and territorial boundaries between families. Male mice organize themselves into a social hierarchy in which the most dominant mouse becomes the "lead buck", or the one at the top of the social ladder. Only the lead buck mates during mating season, all other mice are restricted by the lead buck or downright rejected by the female mice.[4] Mice posses a highly developed sense of smell, hearing, and feeling; however, their sense of sight is poor due to the odd location of their eyes on their head. Mice can hear pitches inaudible to the human ear and communicate with squeaks, some of witch reach pitches humans can only hear through the use of a oscilloscope.

Their smell is highly developed and many mice can recognize if another mouse is part of their family groups based on smell alone. Their sense of tough is also highly developed; due to their poor eyesight a lot of movement is interpreted through the utilization of whiskers and guard hairs to orientate themselves and determine their surroundings. Female mice have a gestation period of 19 to 21 days and may have up to 15 litters a year; due to their ability to become pregnant again within 24 hours of giving birth. The average litter size is 10 to 12 pups whoa re born deaf and blind; within 2 weeks the litter will resemble small adult mice.[5]

 
Domesticated Rat

Fancy Rat edit

Fancy rats first became popular pets in Victorian England during the 19th century, being selectively bred for unusual colouration or temperament.[6] They are prohibited in Alberta, Canada, outside of schools, laboratories, and zoos. Fancy Rats enjoy keeping company of their own kind; it is common to keep domesticated rats in pairs of the same sex because they need a companion but if a pet owner houses two rats of the opposite sex together they will have a lot of baby rats. Whereas mice enjoy independence domesticated rats rather enjoy the company of their owner. Female rats may become pregnant at as early as five weeks old; producing a litter of about 8 young each time, and are able to become pregnant again within 24 hours.[7] Rats have sharp teeth that never stop growing, in order to combat this rats will chew on things such as wood to shave down their teeth to an appropriate length. Non domestic rats have differing diets depending on location. Rats are opportunistic eaters; in the wild rats are herbivores as they will scavenge for seeds, plants and fruits. Due to a lack of easily accessible produce in the city, city rats will eat just about everything ranging from trash to meat. Domestic rats live slightly longer than wild rats boasting live spans of around 4 years, whereas wild rats tend to live around 2 to 3 years.[8]

Hamster edit

 
Coco, a Syrian hamster

Hamsters first gained popularity as pets in the 1930s, with virtually all modern Syrian hamsters (the most common pet species) tracing their lineage back to a single litter of hamsters taken to Palestine for scientific research in 1930. Shortly thereafter, in 1938, hamsters were introduced to the United States.[9] Dwarf hamsters are also popular pets. There currently exist 18 hamster species, the average weight of each species differing slightly. Wild hamsters are typically found in open areas such as deserts, planes, and fields. Hamsters scavenge for food and feast on a diet containing primarily grain. Hamsters may store their food in their large cheek pouches or burrows. [10] Territorial by nature, Hamsters do not run in packs and react aggressively towards a member of their own species.

Domestic hamsters who are caged together will typically act aggressive towards one another as they get older, one hamster may potentially kill the other hamster. Hamsters typically are nocturnal or crepuscular, though it is not impossible for a hamster to be active during both night and day especially if their sleep schedule is disturbed. Hamsters breed at accelerated rates with the potential to produce two to four litters a year. Gestation takes 15 to 22 days and the new born hamsters only require nursing for approximately three weeks. The number of domestic hamster remain large; however, despite their quick reproduction abilities the number of wild hamsters is diminishing due habitat destruction and their place near the bottom of the food chain.[11]

Gerbil edit

 
A young gerbil

It wasn't until 1964 that gerbils became standard in the pet industry. They are prohibited in California. As desert dwellers Gerbils dig long burrows in order to escape the harsh temperatures; however, unlike hamsters, Gerbils are not nocturnal. Gerbils are active most during the evening and morning, times in which the weather is calmest, making them primarily crepuscular. Gerbils are naturally curious, social and nonviolent animals, making them more suitable for children than most pocket pets. Gerbils have an average lifespan of two to four years. Adult male gerbils are very territorial and the larger the gerbil the larger their burrow typically is, and the more territory they scent mark. Gerbils communicate through the use of thumping their back legs and whistling sharply, thumping can be both a communication of excitement and anxiety.[12]

 
Male Degu keeping his pups warm

Degu edit

After initial interest into common degus as research subjects, they have become popular as pets, though until recently[when?] they were seldom found in pet shops. They are prohibited in California. Degus are also social animals and thrive with a partner when kept as pets. Degus love to run around, exercise, and explore tight locations. Domestic degus require some form of bedding so that they may store their food similarly to wild degus. Degu's incisor and molar teeth never stop growing so they need access to items they may regularly chew on. They are naturally active during the day and rest during night, unlike most other pocket pets.[13] They consume a diet of large amounts of fiber. They require nearly constant access to hay, and small amounts of pellets and leafy vegetables. They are prone to two types of diabetes, so degus need a diet which is low in sugar and fat, so fruits and vegetables high in sugar content such as carrots should not be given to a degu. Degus occasionally eat their own droppings to obtain certain nutrients that keep their digestive system healthy.[14]

Chinchilla edit

 
An old grey male chinchilla, about 7 years old.

Chinchillas have been used in research since the 1950s. They are popular pets, but require much care. The domestic chinchilla is descended from Chinchilla lanigera, the long-tailed Chinchilla, and so have thinner bodies, longer tails and larger ears. Chinchillas in the wild roam in herds so naturally domestic chinchillas also like to have a companion and can live to be over 10 years old. Chinchillas can live to be over 10 years old. They consist of a diet of grass, hay, and grass based chinchilla pellets. Their teeth never stop growing so they rely on their food to wear down their teeth to the appropriate length. An improper diet can lead to serious dental disease. Chinchillas may eat small amounts of dried fruit and root vegetables as treats, but too large an amount may lead to serious health issues such as obesity. They are typically nocturnal and require a lot of free space to roam around in. They have litters of around 2 kits and a gestation period of around 110 days. They can breed at 6-9 months of age. The females are seasonally polyestrous and come into heat every 30 to 90 days during the year. They can have up to 3 litters in a year if the female breeds around the time of giving birth.[15]

Ferret edit

 
Emily, a female ferret

Ferrets have a high metabolic rate, meaning they can eat around 8 to 10 small meals daily. They are carnivorous, like cats, so they need a high protein intake which can be satisfied using pellets. Chicken and lamb are common ingredients in ferret food, it is best to avoid foods that include grain or corn. In the wild ferrets commonly take over the burrows of other small animals such as prairie dogs, domestic ferrets live in cages but should be let out for several hours each day. Domestic ferrets enjoy having many places to hide and explore such as tunnels and closed hammocks, some ferrets may also enjoy playing in water. As natural predators, ferrets should be kept separate from any prey animals.[16] Like many other pocket pets, ferrets are social animals and thrive in groups of two or three. A ferret kept on its own will require a lot more attention from its owner than a ferret who has the constant company of his own species. [17] Female ferrets reach sexual maturity at around 8 -12 months of age. A ferret gives birth to an average of 8 kits, gestation last about 41 days.

Rabbit edit

 
Young Netherland Dwarf Rabbit

Domesticated rabbits started to be exhibited in the 19th century and gradually became accepted as pet animals. They have been popular in the US since the late 19th century with the importation of Belgian Hares from England. Keeping rabbits in the house became popular in the 1980s after the publication of the 1981 book Your French Lop. There are many different breeds and sizes of pet rabbits. Their ownership is restricted in Australia. Rabbits are a prime example of a r-selected species due to their extremely fast reproduction rates. Rabbits reach sexual maturity at 3 to 8 months old and have a gestation period of around 30 days giving birth to around 12 kits. A rabbit can get pregnant again as soon as the following day. Rabbits reproduce at such an accelerated rate because only around 15 percent of baby rabbits survive to be one year old.[18]

Rabbits are herbivores and feast primarily on different grasses or cruciferous plants, as opportunistic eaters rabbits will also eat fruits, seed, and even tree bark. However, these high sugar foods should be given to rabbits in moderation. Rabbits produce two types of droppings, one of which called cecotropes which they eat directly from their bottom to gain some required nutrients. Unlike domestic rabbits who require a regulated temperature that is not too hot or too cold, wild rabbits make their homes in nearly any temperature as they have been found making homes in forest, grasslands, meadows, tundra, and deserts. Rabbits live in tunnel systems called warrens that may go as deep as 3 meters (9.84 feet) underground. Rabbits are social animals who typically live in large colonies. Rabbits are most active at dawn or dusk (crepuscular), the low light allows rabbits to evade predictors, this trend of activity carries over to domestic rabbits. Rabbits like to chew on things to wear their teeth down to an appropriate length, as their teeth never stop growing. Domestic rabbits should be placed in cages at least four times their size and allowed time outside of their cage to run around.[19]

 
Sugar Gliders eating mealworms

Sugar Glider edit

Around the world, the sugar glider is popular as an exotic pet, and is sometimes considered a pocket pet. Most US states and cities allow sugar gliders as pets, with some exceptions including California,[72] Hawaii,[73] Alaska, and New York City.[74] In Australia, sugar gliders can be kept in Victoria, South Australia, and the Northern Territory. However, they are not allowed to be kept as pets in Western Australia, New South Wales, the Australian Capital Territory, Queensland or Tasmania.[70][71]

Sugar gliders are highly social animals commonly living in groups of around 7 individuals. They come communicate through vocalization and chemical odors and commonly live in trees. Male gliders become mature at 4-12 weeks and female gliders mature at 8-12 weeks. Breeding takes place in June to November and after a gestation period of around 15-17 days the glider gives birth to one child, or joey, although having twins is possible. The joey spends 2 months in the pouch only opening its eyes 80 days after birth. Male gliders do all the parental care and after 110 days the joey is ready to leave the nest. Sugar gliders are omnivorous relying on the consumption of insects in the summer. Gliders can also eat arthropods, sap, honeydew, and nectar from plants. Sugar gliders eat around 11 grams of food a day, 10 percent of their body weight.[20]

 
Sunao the hedgehog

Hedgehog edit

The exist 17 species of hedgehog world wide. Hedgehog were commonly found in Europe, the Middle East, Africa, and central Asia. They were introduced to New Zealand by England and quickly became an invasive species. Hedgehogs are omnivorous and posed a real threat to insect, snail, lizard, and bird populations due to a lack of natural predators in New Zealand.[21] Hedgehogs may tighten their orbicularis muscle to hide its head, legs, and belly in a coat of prickly erect spines. Hedgehogs are primarily nocturnal, some of them may be crepuscular. Hedgehogs typically take refuge in the empty burrow of another small animal, or a burrow they dug themselves. However, hedgehogs can occasionally take refuge under rocks or in thick vegetation, essentially any where dark and secluded. Hedgehogs tend to by solitary; however, not to the extent of hamsters. Some captive bred females crave the companionship of another hedgehog and occasionally show bonding tendencies when housed with another female; male hedgehogs should not be housed together as they will fight once they reach sexual maturity.[22]

In the wild hedgehogs were considered insectivores, prior to that classifications abandonment. Presently, hedgehogs are classified as omnivorous due to their tendencies to eat what every is available. Hedgehogs have been known to eat bugs, slugs, frogs, fish, worms, small mice, small snakes, and even fruits and vegetables. A hedgehog's diet should be very high in protein. Hedgehogs can eat fruits and vegetables but only in moderation. Hedgehogs may be small but they require a large cage with bedding and plenty of furniture to hide in and explore.[23] Hedgehogs have a gestation period of about 35 days, and gives birth to on average 4 deaf and blind young (hoglets). At three to five weeks old the young leave the nest for the first time to go hunting on their own.[24]




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