Reptiles may be cold-blooded, but that doesn't mean they're cold-hearted. Consider this gecko in Rayong, Thailand, which risks its life to save a fellow gecko from a snake.
(Note: The video is a little slow to get going, but that adds suspense — just listen to the onlookers' excited squeals. If you can't wait, though, skip to the 1:40 mark.)
The video's uploader offers this context on YouTube:
"We live in the countryside and see snakes every once in a while. The Geckos have lived there for years. I walked out of the house 1 day and saw the snake wrapped around the Gecko. We didn't dare to go near it when it happens. Just glad the Geckos were ok."