Status of home with no will in place, dog visitation rights

The following three questions, submitted to FOX 26 senior legal analyst Chris Tritico, were answered during a FOX 26 Morning News segment on Sept. 8, 2015:

My daughter's EX boyfriend purchased her a Dog last year for her Birthday. She broke up with him and he wants to get the dog back. There are no papers on the purchase of the dog. He is coming to my home, texting and calling us and threatening us. He claims he only wants to see the dog for a visit. That is has taken a great loss of not seeing the dog.  He does want the dog but to only see my daughter.
What can I do to keep him away from my home?

I was in Las Vegas this memorial weekend. On Monday May 25, 2015. One of their waiters spilled some really steaming hot dipping sauce down my back. As a result cause extreme pain and discomfort. Their manager came by with some burn ointment. It left a red mark on my back for a couple of days. In your expert opinion, do you think I have a case?

I would like to know my father died without a will. He is owner of a house but my brother is co owner. Will the house go directly to him or will it have to go to the Estate.