"Nobody really considers it to be dangerous or harmful to pets in any way, and it's certainly not as intensive as livestock fencing, " he said.

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It said some dog owners failed to clean up after their pets and there were reports of dangerous dogs being off their leads.

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It's possible when the Dangerous Wild Animals Act was passed in 1976, which made it illegal to own exotic but dangerous animals, a handful of owners released their pets into the wild.

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And he said that while Cayman crocodiles do not make good "pets" - they were in his opinion less dangerous than a Rottweiler.

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"Pets that are out of their comfort zones can have behavior problems in the car, which can be dangerous while driving, " says Hammer.

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