Oh my gosh when I first found one of these guys I was so excited then realized I didn't have any taming foods, so I cleared the pit under the green obelisk (it was near there already and I'm in the island map xbox btw) and scared it down there. I raced home on my argy grabbed some kibble came back. Fed it the kibble all hyped up thinking I would have to ride it like an equus to tame but it tamed instantly. I rode it around a little, put it in a cryopod and went to my base. I threw it out and immediately upgraded health as much as possible. It took me a while to realize that these guys don't do anything special, I was so upset. (And I have researched on multiple websites and they do not increase the chance of twins or triplets, only animal that gives buffs egg related is the oviraptor and it only increases the speed of which eggs are laid, which is actually really useful.)