> The rat did not consent to this (because it can’t), so this is, factually, forced labor.
On the other hand, anyone who's owned an uncooperative dog will know that it's nigh-impossible to effectively train an animal who just doesn't feel like playing along.
And also a dog will do what you ask it because you ask it and it wants too help you. My husky used to pull me on my bike. He knew when I got the bike and lead out that was what was happening and he wanted to do it. He certainly did not think that he had to do it and could easily have refused to let me put the harness on.
