There is no such thing as being bored when you have a dog. They're endless entertainment. They could be just puttering around the house and I could look at them for hours. I could toss a ball back and forth with a dog all day like it was a full-time job. I could play with my dog until the second ice age came. I don't know why they are so funny to watch.
I guess because you never quite know what they're going to do. They might have patterns, sure, but they can't tell you what they're going to do next, so you have to watch and find out. They also have some of the best facial expressions on the planet. Have you ever seen a dog look confused? I have, and it's hilarious. But when you don't have a real live dog to keep you entertained, these memes are here to do the trick.