
who you told it was
"Bring Your Cat to Work Day"
The Big Bang Theory Season 11, Episode 8

...a Montgomery Ward delivery van
ran over our family CAT, Lucky.
The Big Bang Theory Season 2, Episode 4

Not even my CAT. I just feed it.
Some nights, it doesn't even show up.
The Big Bang Theory Season 3, Episode 16

A CAT is placed in a box
with a sealed vial of poison...
The Big Bang Theory Season 1, Episode 17

It's like a CAT riding a Roomba.
The Big Bang Theory Season 8, Episode 6