Dog memes rank second in popularity after cats. A dog can enliven any aphorism, it can be funny, touching, and loyal.
One of the most entertaining types of memes is built on rhyming the word "dog" with whimsical invented words - the irination dog, the charming dog, the biting dog, the smiling dog, the dancing dog, the helpful dog, the bewildered dog, and even the cookie-sucking-up dog, the breakdancing dog, and the cookie-celebrating dog. The dog can enliven any aphorism, it can be funny, touching, and loyal.
Dogs in funny pictures demonstrate purely human emotions - they get jealous, angry, fall in love, and it looks much more sincere than in human beings.
Many memes show cats and dogs being friends, despite the saying.
Dogs patiently tolerate their owner's experiments on them - dressing them up in silly hats and costumes, stuffing all sorts of nasties in their mouths, photographing them while they sleep in relaxed poses, bathing them for no apparent reason with stinky shampoos, styling their hair, and artistically trimming them almost down to the skin. This once again proves that animals are better than humans.
Another popular type of meme is when a dog is compared to its owner in appearance. Look, people, I look like my dog - I have the same hair, the same nose, and I can stick my tongue out just like him.