It’s important to routinely check your animals for ticks, particularly if you live in high-risk areas or have recently visited one. Vets have access to a reliable blood test so if your vet suggests testing for Lyme, it’s a good idea. Dogs can be vaccinated against Lyme disease, but the vaccine is relatively new and somewhat controversial. Common symptoms include arthritis (sudden lameness), pain, fever, lack of appetite, dehydration, inactivity and swollen lymph nodes and joints. Lyme disease in cats is rare, but not unheard-of. Lyme disease is also very common in horses. Some studies show that 50% of horses in high-risk areas will contract Lyme disease over their lifetime. Horses are at a higher risk than other animals because ticks often go unnoticed. It’s difficult to accurately diagnose animals with Lyme disease. Be sure to follow-up with your vet right away if your pet’s condition doesn’t improve.

Source – CanLyme.com