They've been looking for a cure.

I love dogs. I've always loved dogs. The post-credit scene you can't take your kids to see.

Zhenya ran his hand against the grain of Sid’s feathers, ruffling them up so they looked tangled. “You molty, Sid.” His hand was slapped away with a restrained giggle. “So what are you gonna do about it, huh? Wanna pluck them for me? Scratch my itch?”