I thought we domesticated wolves (now dogs) after we had passed our nomad phase and were in our settlement phase (which we are still in now). I’m not certain, but I think the mammoth was already extinct at that time.
Also, I think dogs were generally trained to bring anything of importance back to us. For example, dogs also bring back wounded or dead prey. They still do for hunters today. So I think it’s a bit broader than what you’re describing :)
This is absolute gold. Thanks for sharing