Health & Wellbeing

What Are Common Symptoms of a Sick Rat? A Guide for Pet Owners

Rats are popular pets due to their intelligence, affectionate nature, and playful personalities. However, like all animals, rats can become sick and require medical attention.

It is important for rat owners to be aware of common symptoms of illness in order to provide prompt and appropriate care for their furry friends.

One of the most common signs of illness in rats is a change in behavior. Sick rats may become lethargic, withdrawn, or irritable. They may also lose interest in food or water, or become less active than usual. In addition, rats with respiratory infections may exhibit labored breathing or wheezing.

Other symptoms of illness in rats can include weight loss, diarrhea, or a change in the appearance of their fur or skin. Additionally, rats may develop tumors or abscesses, which can be identified by the presence of lumps or bumps on their bodies.

If you notice any of these symptoms in your pet rat, it is important to seek veterinary care as soon as possible to ensure the best possible outcome.

Physical Symptoms

Rats are susceptible to a variety of illnesses and diseases, and it’s important to be aware of the physical symptoms that may indicate a sick rat. Here are some common physical symptoms to watch for:

Weight Loss

A sudden or significant drop in weight is a sign that something is wrong with your rat. This may be due to a lack of appetite or an underlying health issue.

Lethargy

If your rat is sleeping more than usual or seems less active than normal, it may be a sign of illness.

Difficulty Breathing

Wheezing, coughing, or labored breathing can indicate respiratory problems, which are common in rats.

Abnormal Discharge

Discharge from the eyes, nose, or ears can be a sign of infection or illness.

Changes in Fur or Skin

Rats with skin irritations, bald patches, or scabs may be suffering from mites or other skin conditions.

Swelling or Lumps

Tumors, abscesses, or other growths can cause swelling or lumps under the skin.

If you notice any of these physical symptoms in your rat, it’s important to take them to a veterinarian who specializes in small animals. Early detection and treatment can help prevent more serious health issues down the road.

Behavioral Symptoms

When it comes to identifying a sick rat, behavioral changes are often the first sign that something is wrong. Here are some of the common behavioral symptoms to look out for:

Decreased Activity

If your rat is usually active but suddenly becomes lethargic, it could be a sign of illness. Sick rats may also sleep more than usual.

Aggression

Rats that are in pain or feeling unwell may become more aggressive than usual. If your rat is biting or scratching more than usual, it could be a sign that they are sick.

Loss of Appetite

If your rat suddenly stops eating or drinking, it could be a sign of illness. Rats that are sick may also lose weight quickly.

Changes in Grooming Habits

Rats are usually very clean animals and spend a lot of time grooming themselves. If your rat is neglecting their grooming or has a scruffy coat, it could be a sign that they are sick.

Changes in Posture

Sick rats may hunch over or have difficulty standing up straight. They may also have trouble walking or climbing.

If you notice any of these behavioral symptoms in your rat, it’s important to take them to a veterinarian as soon as possible. Early treatment can help prevent the illness from getting worse and improve your rat’s chances of making a full recovery.

Respiratory Symptoms

Respiratory symptoms are some of the most common signs of illness in rats. If you notice any of the following symptoms, it is important to seek veterinary care as soon as possible:

  • Sneezing
  • Nasal discharge
  • Labored breathing
  • Wheezing or clicking noises while breathing
  • Loss of appetite or weight loss due to difficulty breathing while eating

Respiratory symptoms in rats can be caused by a variety of factors, including bacterial or viral infections, allergies, or environmental irritants.

If left untreated, respiratory infections can quickly become serious and even life-threatening, so it is important to seek prompt veterinary care if you notice any of these symptoms in your pet.

Your veterinarian may recommend antibiotics or other medications to help treat the underlying infection or reduce inflammation in the respiratory tract. In some cases, they may also recommend changes to your rat’s environment, such as removing potential irritants like dust or smoke.

Digestive Symptoms

When it comes to sick rats, digestive symptoms are common and can range from mild to severe. These symptoms can be caused by a variety of factors, including diet, stress, and illness. Here are some of the most common digestive symptoms to look out for:

Diarrhea

Loose, watery stools are a sign that something is not right with your rat’s digestive system. Diarrhea can be caused by a variety of factors, including bacterial infections, parasites, and a poor diet.

Constipation

On the other end of the spectrum, constipation can also be a sign of digestive issues. If your rat is having trouble passing stool or has small, hard pellets, they may be constipated. This can be caused by dehydration, a lack of fiber in the diet, or other underlying health issues.

Loss of Appetite

If your rat is not interested in eating, it may be a sign that they are experiencing digestive discomfort. Loss of appetite can be caused by a variety of factors, including illness, stress, and dental problems.

Abdominal Pain

Rats experiencing digestive issues may also exhibit signs of abdominal pain, such as hunching over or reluctance to move around. This can be a sign of gastrointestinal distress or other underlying health issues.

If you notice any of these digestive symptoms in your rat, seek veterinary care as soon as possible. These symptoms can be indicative of serious health issues and should not be ignored.

Neurological Symptoms


Neurological symptoms in rats can be a sign of serious illness. These symptoms can manifest in various ways and may include:

  • Tremors or shaking
  • Seizures
  • Loss of balance or coordination
  • Paralysis or weakness in limbs
  • Head tilt or circling


If your rat is displaying any of these symptoms, then take them to a vet immediately. These symptoms can be indicative of a range of illnesses, including infections, tumors, or neurological disorders.

It is important to note that some of these symptoms, such as head tilt or circling, may also be caused by inner ear infections. While these infections can be serious, they are treatable with antibiotics if caught early enough. However, if left untreated, they can lead to permanent damage.

Neurological symptoms can also be a side effect of certain medications, so it is important to inform your veterinarian of any medications your rat may be taking.

When to Seek Veterinary Care

If you notice any of the following symptoms in your rat, you need to seek veterinary care for your rat as soon as possible:

  • Loss of appetite or weight loss
  • Lethargy or weakness
  • Difficulty breathing or rapid breathing
  • Discharge from the nose or eyes
  • Swollen or painful areas on the body
  • Changes in behavior or activity levels
  • Seizures or convulsions

It’s important to note that rats are prey animals and tend to hide their illnesses until they are very sick. This means that if you notice any changes in your rat’s behavior or appearance, it’s best to seek veterinary care sooner rather than later.

Your veterinarian may perform a physical examination, blood work, or other diagnostic tests to determine the cause of your rat’s symptoms. Early intervention can often lead to a better prognosis and a quicker recovery.

About the author

Kate Hawfinch

Kate has had pet rats for over 17 years and is passionate about trying her best to be a great rat mom. Now she wants to share the things she's learned with other people who are also striving to become great rat parents!