After you tame one it can eat berries, I put some in my feeding trough and they filled up on hunger. And I saw a black ovis in the wild and picked it up and tamed it but after sometime it turned white, not sure if it's a glitch or what but I haven't seen one since.
If you wanna get wool without having to get ovis by just geting vegie cake make a cage with dino gate then get a argy to transport it into the cage then just simply shear it with scissors. Up if this is useful
The ovis is a sheep-like creature that many survivors find useful in farming. It can be found in the grasslands. While rare, it can be tamed simply by feeding it one Sweet Vegetable Cake. This sheep can be sheered with Scissors to obtain Wool, or killed to obtain Mutton. While the ovis can be mounted, it is not an ideal mount for transport and provides very little use once mounted, other than its ability to climb up steep inclines.— Smallfoot
You find them (most often) up in the north biome, at the blue obelisk. As of now, they need to be born on a ceiling (One tile above where you want them), so they will not fall into the water under the map or other unaccessible places, warning, with this method they will still fall through the ceiling, but they will fall onto the foundation underneath, allowing you to claim them there. Another warning, The baby ovis needs to be claimed immediately, or else it will die of starvation, it will also have abnormally low weight, so be sure to feed it very often.
Heres a Tip: Tame A Berry Collector (P.s Tame a horse or beaver) If your going to be breeding and raising Since THE BABIES WILL MILK YOU DRY OF BERRIES unless you boosted Aging otherwise you will just need 1-3 stacks (Just a reminder that im sure on how much stacks are needed) Hoped this helped