Causes can include:
- Do Dogs Experience Growing Pains? Panosteitis In Dogs
 - 10 Facts About Lyme Disease
 - IMPA: Immune-Mediated Polyarthritis in Dogs (Non-erosive)
 - 5 "Silent" Killers of Cats
 - 10 Things You Might Not Know About Lyme Disease
 - Malignant Melanomas in Dogs
 - Osteosarcoma: Bone Cancer in Dogs
 - Feline Herpesvirus 101 (FHV)
 - How do You Know if Your Cat is in Pain?