Yep. 6-23 Taking up stray dogs by citizens. Any person may take up and deliver to the animal control officer any animal at large on public...

Should Mobile home management be responsible for removing wild animals off premises?

No. See my first answer.

Next of kin refuses to pick up dog. how can this be enforced

If the relatives don't want tne dog, take it to a rescue, or shelter and explain why you are left holding the bag.

Is there any legal action that can be taken against my neighbor ?

Call animal control... that's what their job is.

No, critters break into crawl spaces. You, as homeowner, are responsible for fixing it, just like a broken pipe.

What is AVVO and what does it "stand for"?

If you go to avvo.com they have information.

Provided cleaning services, client is holding my check. They're investigating unauthorized use of the unit, wasn't me, is legal?

8 weeks is plenty of time to "investigate". Tell them to pay up or you will sue them. If they don't pay, file a small claims case.

I would say that there was no notification, hence no permission.

Call and ask the court clerk, hope they don't say, "begging for money in the central standard time zone."

What do you consider animal hoarding?

Having as many as you can properly care for, plus one.