Mr.X:Just a quick note about cats. Free roaming, domestic cats can have a huge, negative impact on natural wildlife. Domestic cats can greatly reduce natural bird populations (migratory species) and mammals too.
As I think you know, Mr. X, we have a bad feral cat problem here on Catalina. Not only do they attack birds, especially our ground-nesting and endemic quail, but also amphibians, reptiles and even our endemic island foxes.
And this doesn't even consider the damage they do to the marine environment. Yes, I know, cats don't like water (unless they're lapping it up from a toilet bowl... ours are salt water toilets here!). However they like tuna and a host of other fish which are caught by the ton to feed them.
Folks who really want to help protect the marine environment might reconsider cats as pets. Much as I loved mine, I have not replaced them.