Animals experience illness differently than humans, which is why knowing the signs and symptoms of Lyme and other tick-borne infections can help keep your pet healthy.

Below are some of the more common symptoms of Lyme and other tick-borne diseases in animals.

Dogs

Symptoms of Lyme disease in dogs may include:
 

  • Joint pain or swelling

  • Sensitivity to touch

  • Lameness

  • Fever

  • Lack of appetite

  • Lack of energy


Note: Not all symptoms will manifest immediately. Some symptoms may manifest months after initial infection.
If left untreated, dogs may experience kidney disease, heart disease, or nervous system disorders. 

Cats

Symptoms of Lyme disease in cats may include:
 

  • Stiff or arched back

  • Sensitivity to touch

  • Difficulty breathing

  • Fever

  • Lack of appetite

  • Lack of energy

 

Note: Not all symptoms will manifest immediately. Some symptoms may manifest months after initial infection. If left untreated, cats may experience heart and nervous system complications.

Horses

Symptoms of Lyme disease in horses may include:
 

  • Muscle pain or tenderness

  • Stiffness or lameness

  • Sensitivity to touch

  • Changes in behavior or mood, including an unwillingness to work

  • Lack of energy
     

Note: Not all symptoms will manifest immediately. Some symptoms may manifest months after initial infection.
If left untreated, horses may experience long-term complications such as damage to joints, nervous system complications, and visual impairments.

LYME SYMPTOMS IN PETS