Because if it was a cat, it would be a K-10.
Puppy dogs !
They both have intelligent eyes, but neither can talk properly.
THEY BOTH LICK THEIR PAWS!
A fur-nace
A dogtor.
A K-9 unit on MLK Boulevard
They have a Bobba Fetish
A Klingon! since obstetrician gynaecologist is too long, and OB GYN doesn't make sense ,lets call them Klingons
because K-10 is for cats.