Boars Being Boars

[Caviequeen]

So the new pig is here who I decided to name Bruce, Anyway, the initial meet and greet went so well they sorta tiffed around and teeth chattered for a bit but it was mostly just humping and sniffing, but now when I was in my bed I heard a lot of noise so I went and looked and sure enough they were on eachother, with teeth no blood but they went around like that in the cage, anyway I separated them now but should I try it again, like do you think there's hope or no I shouldent do it again cause it could stress them out, like is that normal for pigs to do when getting to know eachother or what can do? HELP ME.
I'm keeping Bruce either way. But what can I do if anything?