Signs of Illness in Pet Rats

Lisa Selvaggio
by Lisa Selvaggio

Pet rats are super cute, loads of fun, and very smart, but like all pets, you need to be aware of the health problems they might develop, especially as they get older. Plus, many diseases are spread between rats or caused by improper housing conditions, so being aware of the potential infections they can develop will be useful in helping to keep them healthy.

irishe4kaaa/Shutterstock

What are some of the signs of illness in pet rats? Here’s a brief guide to get you started, but remember that the best person to consult about your rat’s health is a qualified veterinarian.


Causes and Symptoms of Illness in Rats


Rats can develop a variety of illnesses that affect different parts of the body and cause a range of symptoms. Problems include but are not limited to:


Digestive issues


Digestive problems in rats can be caused by bacteria, protozoa, and worms. When symptoms occur, they include diarrhea, weight loss, and lethargy.


Medications can clear certain infections, so consulting a veterinarian is necessary.  


Skin problems


In addition to wounds caused by fights between rats, these pets can develop skin problems because of bacteria like Staphylococcus, fungi like ringworm, or parasites like mites, fleas, and lice.


Symptoms of skin problems include itching, scabbing, hair loss, sores, and irritated, inflamed, flaky, or red skin.


Respiratory issues


Pet rats can develop a chronic respiratory disease called Murine Respiratory Mycoplasmosis. They can also be infected by viruses and bacteria that lead to respiratory infection or pneumonia.


Signs of a respiratory problem in rats include:


  • Sniffling
  • Labored breathing
  • Sneezing
  • Lethargy
  • Inactivity
  • Rough coat
  • Weight loss
  • Lack of appetite
  • Discharge from nose or eyes
  • Staining around the nose and eyes
  • Head tilt


Tumors


Pet rats can develop benign tumors like keratoacanthomas that could form on the tail, chest, or back. Other types of tumors include testicular tumors and mammary fibroadenomas, which are usually benign. Others, however, might be malignant, such as tumors that develop on the Zymbal’s gland or pituitary gland.


If you notice any lumps or growths on your rat’s body, take them to the veterinarian. Treatment might involve surgical removal of the tumor.


Spinal cord degeneration


This causes paralysis of the hind limbs in pet rats who are over 2 years old. Anti-inflammatories might help, but unfortunately, prognosis is usually poor.


Other Signs Your Pet Rat Isn’t Feeling Well


Sometimes, your pet rat will show subtle signs that they aren’t feeling well, while other symptoms will be more obvious.


In addition to the symptoms discussed above, if you notice your rat exhibiting the following, consult your veterinarian:


  • Unusual vocalizations (e.g., squealing, screeching, wheezing)
  • Biting themselves
  • Changes in grooming (e.g., excessively grooming or not grooming enough)
  • Changes in weight, appetite, water intake, gait, posture, or appearance
  • Changes in activity level or behavior (e.g., aggression, hiding, being less social)
  • Loss of balance or coordination
  • Broken, overgrown, or misaligned teeth
  • Drooling
  • Changes in urination or bowel movements
  • Squinting, eye discharge, redness, or changes in eye appearance
  • Difficulty eating


What You Should Do If Your Pet Rat Looks Sick


Whenever your rat isn’t feeling good, it’s best to tell your veterinarian, who may recommend bringing your pet in for a thorough examination so they can figure out what’s going on and provide the appropriate treatment.


Your veterinarian may also advise separating a sick rat from your other rats to help prevent the spread of bacteria or viruses.


Keep a close eye on your rat every day and alert your veterinarian to any changes in their appearance or behavior. That way, you can have a problem diagnosed and treated as soon as possible to help your rat recover. Waiting too long may cause the problem to progress to the point that it becomes harder to treat.


Take Steps to Help Prevent Illness in Your Pet Rats


You can help prevent illness in your pet rats by providing them with everything they need to thrive. This includes a large enclosure that’s cleaned daily and set in an area of your home that’s a comfortable temperature and free of direct sunlight and drafts.


Pet rats also need bedding that’s safe and comfortable, along with fun toys, hammocks, and hideouts. Use products that are made of non-toxic materials and won’t cause injuries.


A nutritious and balanced diet is a must, and a veterinarian can discuss this with you if you have questions about what to feed your pet rat. Plus, a vet can guide you in terms of nutritional supplements for your specific rat and their condition, such as Oxbow Natural Science Joint Support which contains ingredients like glucosamine and turmeric for joint health.

Always supervise your rats when they aren’t in their cage to help prevent injuries and stop them from eating or chewing things they shouldn’t.


Be sure to use an exotics veterinarian who has experience in treating pet rats. They can talk to you about your rat’s enclosure, diet, toys, and activity, and give you tips on how to improve the way you care for your rat to give them the best chance at living a long, healthy life.


Now that you know a few of the signs that would indicate your pet rat is sick, you can take action if anything seems amiss.


Join the PetGuide community. Get the latest pet news and product recommendations by subscribing to our newsletter here.

Lisa Selvaggio
Lisa Selvaggio

Lisa Selvaggio is a freelance writer and editor, and our resident cats-pert, with certifications in pet nutrition and pet first aid. She enjoys producing content that helps people understand animals better so they can give their pets a safe and happy home.

More by Lisa Selvaggio

Next