Cheshirekatt got it! It was:

How many breeds and kinds of pets there are
I never knew until we started Pet of the Day!
Who knew a Xoloitzcuintli existed, near or far
Or a Sphynx would be not a statue, but a real live Cat of the Day?

Who knew how many rescues we'd meet through this site
Or how many rescuers who care day and night?

I didn't know about the Selkirk Rex with its curly fur
Didn't know a prairie dog could be a pet, that's for sure!

A Portuguese Podengo Medio, a Degu or Duprasi
An Alaskan Klee Kai, a Scottish Fold so sweet and sassy

These are not just creatures from a fairy tale or book
They're real live pets that we learn about and are hooked!

And there are the unique "breeds," the one of a kind shelter finds,
Whose ancestries are a puzzle, but they're gems of every kind.

But of all the purebreeds and mixes, one thing I always knew
Is that their people love and cherish them, and guess what?

We do, too!

Do you want to host the next puzzle, or pass to bluekat, the next highest point-getter (PayItForward had a wrong guess)?