
- He got a CAT to keep him company.
- You're kidding.
The Big Bang Theory Season 4, Episode 3

the sound a moving CAT makes.
Vikings Season 1, Episode 9

The photo of the CAT
who wants to "Has Cheezburger?"
The Big Bang Theory Season 2, Episode 7

We might consider Schrödinger's CAT.
The Big Bang Theory Season 1, Episode 17

It's like they say--
a CAT can have kittens
The Big Bang Theory Season 5, Episode 6