It is Illegal to Possess a Florida Panther* (*Unless you have a permit)
A large cat, apparently a Florida panther, was located in a residential neighborhood in Parkland, Florida and successfully captured by wildlife officials. Residents noticed the cat and contacted authorities, who were able to safely tranquilize and capture the cat. The cat was wearing a collar, which suggests that it may have been an escaped pet. Authorities initially believed the cat was a endangered Florida panther, but there are none permitted in the area. Further consideration suggests it may not have been a Florida panther, a rare subspecies of cougar native to Florida, and under greater protection as an endangered species. The fact that the animal had a collar, and due to the rarity of Florida panthers, particularly in Broward County, (and since none are permitted near there,) it is more likely a common puma, aka cougar.
Cougars/Pumas/Florida Panthers/Catamounts or whatever name you wish to call them… they are still wildlife that requires a permit to be kept in Florida (I believe they qualify as Class I animals, which could present a danger to the public.) Regardless, it is also a violation to fail to keep a permitted animal safely caged or restrained.
via Brandon Beyer
*Update: Apparently, to obtain a permit for Class I animals such as cougars, one must have at least a year of practical experience in the husbandry of that species, or at the genus level (Puma) of cougars and panthers.