"The ownership of the dog is not in writing, but there was a verbal agreement during the paperwork process." That was a mistake. It should have...

Moving to lawsuits and disputes. Retain counsel to deal with this. Use the Avvo search tool and/or your county bar association to find one.

It's his dog, unless and until he gives it to you, comes back for, or you report it abandoned to Animal Control and it takes the dog.

"My dog’s did go onto his property and the dog’s began to fight." Then your dogs (note correct pluralization) were not under control and...

"My husband sold our atv to someone with a bill of sale, but we havent paid it off yet to provide the title?" How would we know? Assuming that...

No. FB did not do it; the group admin did, and the group rules almost certainly give admins that authority.

Stop posting details on open sites and retain counsel immediately. Use the Avvo search tool and/or your local bar association to find an attorney.

This is not a job site. If you want an attorney, YOU must make the contact. As you can't pay for one, I suggest you call your county bar...

The police will not get involved. Sue your "friend" in replevin to recover your dog.

Yes, for trespass to chattels and, possibly, theft. The issue will be, if you got your dog back unharmed, what your damages are.