Thankfully I don't have these thoughts often, but I noticed that when I do have them it's during that time of month.
I don't have any children yet, so in a way JoJo is like my child. Thankfully, these thoughts pass quickly, but it still disturbs me when they enter my mind. I know subconsciously I'm doing it, but I hate it.
I guess that's the one bad thing about getting a pet and loving it so much...is that deep down we know that one day they will be gone.