Quote Originally Posted by Jake View Post
I've had groups of juvenile xenopus attempt to crawl up the corners of their tubs in the winter before, but I use no light. Escaping the cold would be a good explaination because the rest of the year the same age frogs never did this, only when the temps got down to the upper 50's they'd start.
Thanks very much, Jake!...that's the closest I've heard to a similar observation in the 15 years I've had this in mind. They will leave the water when stressed in other ways - drought, poison, etc., so it does follow. I read of a population that lives in the subterranean water supply system of a castle in England (who thought of that introduction!?)..I believe it is in Biology of Xenopus. The water stays cool - 50's I believe...reproduction seems not to occur but marked frogs are 16 or so years of age...need to follow up on that study, thanks for the prompt.