So what is an animal anyway? In our inaugural episode of Crash Course Zoology, we’ll endeavor to answer just that because as it turns out, it’s complicated! But before we get there we’ll need to ...

Picture an “animal” in your mind right now. What does it look like? A dog? A lion? Maybe a sloth, pangolin, naked mole-rat, or even just a human? There’s a good chance that you imagined a mammal, ...

Hermit crabs have the most chromosomes of any animal, with 254. Chromosomes carry genetic information in the form of DNA. Genes located on autosomes determine the inheritance of physical traits. Sex ...