You can collect blood packs and spoiled meat with these guys as well as with two hundred bloods packs you can make a taming elixir this elixir can be force fed to a knocked out creature to make its taming bar go up by 30% and for passive tames you must feed it regularly first and then put this in your last spot in your hot bar. You can also use weapons on the back of this guy and I would recommend taming a low level first and collecting enough blood packs to tame a high level.

I hope this helps!

-Raffle-comic466