I don't think it should be regulated or licensed. We already have laws in place concerning public endangerment and animal cruelty. If someone is housing their exotic animal in such a way that it's not meeting the animal's needs, or is putting the public at risk, then we have laws to deal with it.
The thing about exotics bans is they are almost universally backed by HSUS and PETA. It's part of their strategy to outlaw all animal ownership. It goes:
1. Alligators and primates! Oh noes! Nobody needs them. They're dangerous and a disease vector!!
2. Tigers, bears, lions, because nobody NEEDS a large cat. And think of the children if one were to escape!!!11eleventy1
3. Wolves are wild! They need to stay wild. And think of all the unstable wild wolf hybrids people are breeding and turning loose in the woods! (forget the fact they they're mostly malamute mixes
) Wolves and wolf hybrid ban, GO!
4. Look at these reptiles! They carry salmonella! Ban turtles with shells under 4 inches because parents cannot be responsible for what children put in their mouths! Ban
all reptiles!
5. Prairie dogs carry monkey pox! ZOMG! Ban!
6. Wait a minute, look at these headlines and bit statistics! What dangerous, large powerful dog breeds we've created. They need to be regulated too. BSL FTW!
5. BSL ad nausem, with mandatory spay/neuter until they achieve their final goal of no animals living with people.
There's a lot of other little niches where other species fit in. I had to write to the west virginia legislature one time urging them not to pass a bill that banned "domestic animal hybrids" along with a slew of exotics. They way the bill was worded, someone's mule could have been confiscated for eating grass (destroying native plant life). Not to mention the cattle industry, what with so many breeds having their origins in mixing different species of cattle.
I feel that as an American citizen, if have the means to put a heated moat around my private castle and fill it with caimans, as long as the animals are well taken care of and nobody is in danger then I should be able to do whatever the heck I want.