"Flo was very excited—more than any of us expected," the pets' owner, Holly, told Newsweek.

Older siblings react with joy and emotion as they learn their families are growing in these sweet moments.

The video starts out looking totally normal, with this orange cat just lounging on the bed, staring at her mom, who is ...

It is absolutely adorable to witness a dog copying their furry sibling. This specific video captured a cute Vizsla dog named ...

Twins burst into screams and tears when their parents reveal the ultrasound showing the baby sibling they have wished for.

Becoming estranged from a sibling can be devastating, even when it also brings a sense of relief. Here's why it happens, and ...

Be it human or fur babies, they all love to tease their siblings. Even this Bernese Mountain Dog knows the weak point of his Golden Retriever sibling and never leaves a chance to tease her. And as ...

This isn’t your typical “how to stop the fighting” advice. Sibling rivalry isn’t just about fighting over toys or who gets the front seat. Dr. Becky, the clinical psychologist behind the “Good Inside” ...

A person who took in their sibling’s dog six years ago has sparked a heated debate online after refusing to hand the pet back now that the original owner has returned from abroad. The Reddit user, ...