The annual bison mating season has begun, bringing louder bellows, increased aggression and dramatic displays to national ...

Add Yahoo as a preferred source to see more of our stories on Google. Two dogs mating on the beach. Why do dogs get stuck when mating? It's a question you may be asking if you've ever noticed two dogs ...

African gray foam-nest treefrogs (Chiromantis xerampelina) are common across the savannas and dry forests of southeastern Africa. Despite their unremarkable outward appearance, these small animals ...

Add Yahoo as a preferred source to see more of our stories on Google. If you suffer from arachnophobia, this is the time of year when you're most likely to run into one of your worst nightmares: a ...

A provocative study by evolutionary biologists takes on one of Charles Darwin’s central ideas: that males adapt and compete for the attention of females because it is the females who ultimately choose ...

When it comes to sex, males and females are not always equal in their desires. No, you haven’t stepped into a couples therapy class. Welcome to the animal kingdom, where what’s good for one gender ...