AITAH for asking roommate to clean dog pee?

I dog sit for some extra money. My roommate helps sometimes and I take money off his portion of the rent in exchange. Recently he was helping me a lot with a particular dog sit bc I wanted to spend more time with my boyfriend so my roommate took on more of the dog care for that job. But then he got sick (my roommate) so he ended up not doing as much of the dog sitting as planned.

A few days later I have a different dog and my roommate is feeling better. I tell my roommate I’m going to spend the night at my boyfriends house. I didn’t explicitly say “so please take care of the dog” but I figured it was implied. My roommate also likes this dog a lot.

So I get home this morning from my bf’s house and the dog has not been fed and he has peed on the carpet. My roommate is in bed asleep. His door is open so I’m sure the dog was barking or otherwise making it know he needed to go out.

I’m mad at my roommate for ignoring the dog and not letting him out/feeding him. I’m planning to ask my roommate to clean the pee off the carpet when he wakes up.

Am I the asshole?