These creatures are beasts on ark mobile. 100% recommend getting one, even if its a low level.

One of my first direwolves (lvl 14) with terrible stats took down 2 sarcos (both lvl 20) and had only lost 300 of its health.

After a few imprints and a bit of stat breeding, my direwolves can take down spinos and rexes. They are only at lvl 35 as pups and have over 1100 health without mutations and levelling. It gets to 1500 with 70% imprint.