This device heats crabs and makesit so they dont freeze to death because they are used to heat.

Pros: good with crabs

Cons: none

We use this for our ball python. It works great. He has a log to crawl under and the heating pad is under it under the outside of the cage. The bottom gets warm but the snake is not laying directly on the heating pad. We love it,it works great.

Pros: Works great

Cons: The biggest size Needs to be a little bigger

I love these. I have one for my hermit crabs and one for our Chinese water dragons habitat. They are a tad small but last a long time and do their job

Pros: Works well

Cons: not very large

kept my leopard gecko warm at night when temp. was colder

Pros: warm

Cons: nothing here....