For most pet dogs in this day and age, their number one job (aside from being man's best friend) is goofing off. Sure, we can take them to puppy training and teach them as many commands as we like, but the real joy of canine companionship is how shamelessly silly they can be.
While we may have originally domesticated many animals for practical reasons, nowadays the entertainment value is the main thing keeping them around. That, and the unconditional love that most of us will never feel from other people. Both of these things make them irresistible material for memes, and dog lovers show no signs of slowing down their affection for using canine humor on the internet. It's cute and it's effortlessly amusing — what's not to love? Even if you find yourself without a tail wagging companion currently, you can still enjoy a handful of these memes. Wholesome doesn't have to be boring.