Verified Answer :

Dogs. Cats.
4. To. 9

64. To. ?

I solved this by guess-timating, and i got it right. I know that 88=64 and 42=8 82=16, and i checked and got 164=64.
Since you do:

Dogs:4 16= 64
You have to do:
Cats:9
16= # of cats
And 9*16=144,

So there are 144 cats at the kennel