The idea that dogs and cats are natural enemies is largely a myth, as countless pet owners have stories that prove otherwise. Though they communicate differently — dogs wag their tails to show joy while cats often swish theirs in irritation — these species can learn to live together peacefully and even form close bonds. In fact, researchers have discovered that friendly cats and dogs will greet each other with nose touches and can develop the ability to read one another's body language, per Science Direct. When a dog is raised in a household of cats, the dog might also adopt cat-like behaviors, such as stalking, pouncing, and even attempting to purr.