Because it has EIGHT legs
And two body parts
The Big Bang Theory Season 8, Episode 21
A dogapus
can play fetch with EIGHT balls.
The Big Bang Theory Season 4, Episode 2
Six, seven, EIGHT, nine.
Vikings Season 1, Episode 8
Eight. They will eat our pussies.
Money Heist Season 3, Episode 7
...by the fact that I haven't had
intercourse with him in EIGHT years.
The Big Bang Theory Season 3, Episode 11