Moo

There's just no good reason for taking in yet another Great Dane right now, but here he is.

He's a cow dog, his name is Moo;
you will like him, he likes you too.
Many spots and many dots;
he's a cow dog, you'll like him lots.
He's one year old, if truth be told,
he's just a pup, with a heart of gold.
His name is Moo, he's joined our zoo.