♪ Little ball of FUR...
The Big Bang Theory Season 12, Episode 19
Little ball of FUR
The Big Bang Theory Season 1, Episode 11
Better than watching a guy in a FUR cloak
ride a girl's bike?
The Big Bang Theory Season 9, Episode 21
(SINGING) Soft kitty, warm kitty
Little ball of FUR
The Big Bang Theory Season 10, Episode 20