Happy kitty, sleepy kitty
Purr, PURR, PURR
The Big Bang Theory Season 10, Episode 20
♪ Purr, PURR, PURR
The Big Bang Theory Season 12, Episode 19
Purr, PURR, PURR
The Big Bang Theory Season 1, Episode 11
Purr, PURR, PURR
The Big Bang Theory Season 1, Episode 11
Purr, PURR, PURR
The Big Bang Theory Season 6, Episode 22