Comment by ajkjk
I read somewhere that domesticated dogs are to some degree bred to stay in their "childlike" state, so in a way they act like wolf puppies that never get older. Probably different breeds have different degrees of this. But anyway, I wonder if there is supposed to be some counterbalancing "maturity" or "responsibility" impulse that would cause them to decide not to do the thing, but since that has been bred out / disabled, they just run on impulse forever.
Incidentally I feel this way also: like I never fully grew up, and I easily regress to being trapped in a childlike state where I'll e.g. play video games all day. To snap out of it I have to "remember" to be an adult, like it's easily forgotten especially if my daily life doesn't ask me to have any serious responsibilities. maybe dogs don't have any responsibilities so they have no reason to stop playing.
Indeed most domestic animals exhibit some degree of neoteny, or juvenile characteristics as adults, including humans ourselves. We’ve sort of domesticated ourselves.