These photos are a few years old, but worth re-sharing for Daily Squee Value.
The story: Three cougar cubs were born at a zoo in Samara, Russia, but caretakers worried that the parents might behave aggressively, and harm their babies. So they gave the cougar cubs to Cholli, a German shepherd mommy with five pups of her own and a strong maternal instinct. Cholli and the foster children got along great. She fed them and cared for them as if they were her own puppies. [via LA Times archives]