Since Rocky and Rumor have arrived I have found where someone has thrown up in the litter box two different times. I believe it is Rumor because she likes things to be in place and the one time I saw her throw up in the house she cried like it upset her.

Maybe the dog food made their stomach hurt enough they knew to get to the litterbox. You know that feeling of it's coming out one way or another, sorry but you get what I mean.