We don't always know why our pets do some of the things they do, but it turns out that paying attention to their strange behaviours could actually help keep us safe. Cats , dogs , and other pets are known for exhibiting some bizarre behaviours that we often just brush off as them being "silly". You may have heard your dog barking at nothing, or seen your cat staring intently out the window, and simply thought they're just doing what animals do. But it turns out that sometimes the strange