The Two Roxys

Let me explain what's happening:

 

Roxy, the black lab on the right, normally arrives at the daycare, sits down, and shows off her "puff" to anyone who's interested.

 

For the first time ever, Roxy K, the chocolate lab on the left, decided to sit down and mimic Roxy by showing off her "puff".

 

I'm quite certain that if you play this enough, you too can hear Roxy whispering "bitch" before getting up and walk away in disgust, leaving Roxy K to sit and wonder what she did wrong.

Done