Found an article on Xenopus introductions in North America

[rodsboys]

Short read, has a map though. Kind of interesting.

African Clawed Frog (Xenopus laevis) - FactSheet

[mpmistr]

Short read, has a map though. Kind of interesting.

African Clawed Frog (Xenopus laevis) - FactSheet

They're so cute yet so destructive.. lol

[tgampper]

Here are a couple more web sites on Xenopus as an invasive species. I was a contributor to the first site.

Introduced Species Summary Project - Xenopus laevis
Xenopus laevis - African Clawed Frog

African clawed frogs are very adaptable to extreme conditions. I also heard that these frogs invaded the ponds in San Francisco causing much turmoil in the city