Penny and Roo are “unconventional friends,” as Metapicture puts it.
Penny is an “experimental chicken” whose program had ended, and Roo is a chihuahua born without fully-formed front legs and abandoned in a park. They became best buddies after their rescues at Duluth Animal Hospital.
I wasn’t sure what an “experimental chicken” was, and thought maybe Penny’s appearance is due to some sort of genetic splicing or something. She is actually a silkie chicken who just had the misfortune of ending up in a lab. I learned something about chicken breeds today.
See more at Metapicture and Bored Panda.