The Rat Race
Housing
Proper, adequate housing is a major concern in the care of
healthy mice and rats. The social well-being of the animals
must be the primary consideration. Mice and rats can be housed
in cages of wire, stainless steel, durable plastic or
glass. Glass is the most recommended because it resist
corrosion. Wood enclosures must not be used as these types of cages
are difficult to clean and cannot withstand the destructive gnawing of the
rodents. The enclosure must ve escape-proof.
The enclosure must be roomy enough to allow the resident(s) to
pursue their rnormal activities. A hiding spot to ensure privacy must
be provided as well as exercise wheels to maintain your pets physical and mental
health. Rats tend to be burrowers and enjoy hiding under things for long
periods of time.
Cages should be easy to clean and be well ventilated and lighted.
Bedding must be clean, non-toxic, absorbent,
relatively dust-free and easy to replace. Shredded paper, wood
shavings and processed corn-cob are the best types of
bedding materials.
Pet mice and rats seem most comfortable when they are kept away from
excessive noise, confusion and needless excitement.
Sudden environmental
temperature changes must also be avoided, pet rodents do
not tolerate them well.
Be careful housing more than one mouse together in a cage. Mice can
be very aggressive towards one another. Males, in particular, are
likely to fight, so it is wise
to always house male mice separately. Female mice
rarely fight unless they are defending their nests.
Rats are more communal and, unlike mice, several males
and females may be kept in the same cage, provided
that there is enough space. Nursing females may fight among
themselves and males may
occasionally bother the young but it is
generally infrequent.
Cleaning
Enclosures and all cage "furniture" must be cleaned and
disinfected weekly. The food and water containers must be
cleaned and disinfected daily. have more than one set
of containers, the dirty ones can be washed in a
dishwasher.
A good scrubbing of the enclosure and "furniture" with hot
soapy water and a thorough rinsing must be followed by the use of
a disinfectant.
Feeding
Good quality food and fresh, clean water must be available
to you pet rodent at all times. Rodent food (milled pellets or blocks) are
preferred. These foods are readily available pet
shops. Kibble-type kitten food can be given. Seeds and nuts are not
recommended because they contain too many fats and oils and
do not provide adequate protein levels.
Table scraps and alternative foods can be offered to pet mice and
rats but these must be limited to healthful items (whole protein
sources such as chicken or tuna) and must not exceed 15 percent of
what the pet eats on a daily basis. If the proper feeding
recommendations are followed, malnutrition and
malnutrition-related problems will be very unlikely among pet
rodents. Vitamin or vitamin and mineral preparations and salt
blocks (licks) are generally unnecessary.
Water is most easily made available by providing it in water bottles equipped with
"sipper" tubes. The tubes themselves can become clogged with food
debris so they must be cleaned daily. The dispensing end of the tube
must be accessible to the smallest rodent within the cage. Both mice and rats
tend to feed at night, although day-time feeding among both is quite
common.
Health
Strict quarantine of all new rodents purchased, for at least
four weeks, will greatly reduce the chance of disease among
pet mice and rats. This is especially important for
pet rodents because of the severity of certain diseases that they may
have without showing signs of illness.
Rats and mice are especially sensitive to the irritating effects from
exposure to ammonia. This chemical builds up quickly in the
bedding from the urine excreted by pet
mice and rats. Bedding changes must be made two to three times
each week. Adequate ventilation is extremely important in reducing
the irritating effects of ammonia on pet rodents.
Obesity is more often a problem of pet rats than mice.
Overindulgent pet owners and the feeding of diets rich in seeds and
nuts are often responsible for this condition. Owners should
resist the temptation to feed "junk food" such as french
fries, cookies and candy. Commercial diets specifically
designed for rats are always preferred and can be supplemented with
whole wheat bread, dry cereal, pasta, fruits, and vegetables.
Overgrown Incisors. The incisor (front, gnawing) teeth of all
rodents and rabbits grow continuously for the life of the individual.
The constant use of these teeth by these animals and the continual
wear between the uppers and lowers usually prevents overgrowth
of the teeth. Hereditary abnormalities of the jaw bones or teeth, in
malocclusion (improper meeting of the upper and lower incisors).
Malocclusion, in turn, results in overgrowth of one or more of the
incisors with subsequent injury to the mouth. Mice and rats with
this problem must have their overgrown incisors trimmed
periodically by an experienced veterinarian or veterinary technician.
Mice and rats are very susceptible to the formation
of tumors. Rats over two years of age are very susceptible.
You must seek veterinary attention at once
if you discover an external lump or bump or unusual tissue
protruding from a body opening. Tumors tend to grow continuously larger and may
ulcerate and become infected if they reach very large sizes. For this
reason, it is always best have them removed when they are small
in size.
Pet mice and rats may be the hosts
for a variety of external parasites. Mites, nearly microscopic,
spider-like organisms, live on the skin surface and feed primarily on
skin debris. They are transmitted by direct contact between infested
and uninfected rodents. Signs of infestation range from mild
scratching to severe scratching with hair loss and ulceration of the
skin.
A veterinarian must be consulted if a mite infestation is suspected.
A scraping of the skin and a microscopic examination of it will be
necessary in order to confirm the diagnosis. Treatment will be
dictated by the veterinarian and may include a new injectable drug
that has proven very effective in treating mange in a wide range of
animals.
Lice may also infest the hair of pet mice and rats. They are
flattened, wing-less insects that suck tissue fluids (including blood)
from the skin of the host. Lice are larger than mites and can usually
be visualized with or without a magnifying lens. Lice are most
often transmitted by direct contact with infested bedding and
between infested and uninfected individuals.
A veterinarian must be consulted if a louse infestation is suspected.
An appropriate treatment will be recommended.
Tapeworms and pinworms are the
most common intestinal parasites of pet mice and rats. They
often go undetected unless the parasites are present in
large numbers. Symptoms of infection may include weight loss,
inactivity, lack of appetite, constipation and excessive licking and
chewing of the rectal area and base of the tail.
An appropriate treatment will be
recommended by the veterinarian. Pinworms are especially difficult
(sometimes impossible) to eliminate from mice and rats.
Transmission of these parasites to man is possible, but unlikely. It
is, therefore, advisable that great care be taken when handling and
disposing of rodent feces. Furthermore, contact between pet mice
and rats, their feces, and young children must be limited and always
supervised by adults.
Human allergies to rodents are common and the symptoms can be
serious, even life-threatening.
The offending allergens may be skin dander and hair or the proteins
in aerosolized urine. Symptoms among allergic individuals may
include runny eyes and nose, sneezing, congestion, coughing,
asthma symptoms including shortness of breath and anaphylactic
shock. Hives may also appear on some individuals.