A curious dog lies on the floor while a cat peeks through a pet door, showing a moment of playful interaction between two ...

A two-year-old dog has melted hearts with habits picked up from her older cat sibling—including sitting like a "loaf." Meet Avka, a border collie mix who lives in Baltimore.

A dog's desperate attempt to befriend her cat sibling left viewers in stitches—and the cat annoyed. Dogs take pride in their reputation of wanting to be friends with anyone and anything, but ...