Are you seriously wanting a moose for a "pet?" I firmly believe wildlife belongs in the wild. The normal habitat of the moose is the temperate or subarctic areas of the northern hemisphere. They can become aggressive, especially if they get a disease caused by a parasite that invades the brain, or when habituated to people and denied food - just like other wild animals.
Moose are herbivores and feed on vegetation - a lot of vegetation, as you can imagine. I don't know if Florida has the grasslands and woody trees necessary to sustain a moose without the moose having to resort to chewing on peoples' landscaping! They especially like the new shoots of willow, birch, aspen and maple.
They also like to cool themselves in the water, and I know Florida has plenty of water, but the water in Florida would contain new predators for the moose - alligators, crocodiles and snakes!
The moose has been considered in past centuries as a possible beast of burden to carry the mail in Sweden, but that idea was forsaken due to the aggressiveness of the moose during the rutting period. The Russians also sought to domesticate the moose to study its behavior and the process of domestication - the Russians are the ones who domesticated the silver fox during the middle of the last century, initially for the purpose of creating tamer animals for the fur industry.
I strongly encourage you not to bring a moose to Florida. Again, I believe wild animals belong in their natural habitats. If you want a domesticated wild animal, look for a silver fox! Or, if you just want a very large pet, get a Great Dane!