For many animals, siblings are a key component of their social environment during early life. Previous research has shown ...

Add Yahoo as a preferred source to see more of our stories on Google. Most siblings argue and bicker from time to time. It's like it's in their DNA. Teasing, taunting, and even wrestling are often a ...

Parents know the soundtrack from sibling rivalry and likely participated in it when they were kids! Someone grabbed the blue cup, someone else “always” gets the front seat, voices rise, and a door ...

The Fort Worth Zoo is home to several Western Lowland gorillas, including 10-year-old Gus and his three-year-old little brother, Bruno. Just like human siblings, these two love each other but ...