@ninjacolin That’s not what’s happened. Human have brought animals to place they did not exist naturally and let them go.
”HOW DID THEY GET HERE?
Typically, an invasive species is a creature that has been introduced by humans to a new location where it does not occur naturally. These invasive species become capable of establishing a breeding population without the help of humans and can spread throughout the new region. In Florida’s case many of the established invasive species arrived as a result of the pet or shipping trade. Some have even been deliberately introduced into the environment to help control pests on farms. Others have been released into the wild by owners who no longer want them.”
The pythons can just join the party. Down here in Florida we have:
Monitor Lizards
“Leaping lizards! Dangerous reptiles advance
The Sarasota Herald-Tribune reports that Nile monitor lizards, nasty, 6-foot-long, predatory reptiles brought to natural areas by the pet trade, are advancing far beyond previous projections.
The lizards were confined to a relatively small area on the outskirts of Fort Myers a couple of years ago, but now it appears they have been spotted as far away as northern Sarasota County.”
”“A large lizard capable of eating small pets and injuring children spotted in a Central Florida neighborhood tree remains on the loose, keeping homeowners on edge.””:http://www.freerepublic.com/focus/f-chat/1908874/posts
Then there are the poisonous bufo toads
“These toxic toads called Giant Toads (Bufo Marinus) are native to the Amazon Basin in South America. ” Source