A 4-year-old, 2.7 kg, neutered male lop-eared Himalayan rabbit presented to a veterinarian for lethargy, inappetence, and wet, stained fur and skin on the hind limbs and abdomen (Fig. 1).

On my weekly visit to a research laboratory, I encountered a 14-month-old dog with lameness in its left hind limb. The dog is one of a small colony of male beagles, aged between 1 and 3 years ...

Donelan and his coauthors found that a kangaroo’s tail provides more forward-directed force than its hind and forelimbs combined. “Animals have discovered many uses for their tails but, as far as we ...