passive-agressive pit bull

...a co-worker was telling me about this dog she got that is really sensitive to correction.

Bad Fido!
Poop outside, Fido!
No sniff-crotch, Fido!

Any negative feedback you give this dog sends it into this deep funk that in turn causes the sender to regret having said anything in the first place.

...then she said the dog was a pit bull.

Whaaa???

I thought, 'They must be breading them now for passive-agression...'