Since my generation didn't grow up with Facebook, it's easy to see how the social media outlet has changed things. Some things have come up that I didn't for see, like people who always post about the same thing, or people who post pictures of themselves in the bathroom mirror taken with their camera phone (the guys are always topless). Other things are completely predictable like when my friends have kids and all of a sudden they start posting a million pictures of baby feet, funny faces and the child's milestones. We can tease them, until we have kids and do the same thing. Some of my friends though, they had animals.
There's no other way to describe it. Perhaps they weren't ready to have kids yet, and later in life they will, but these people do all the same things as the people with kids, only about their pets. The nursery is a dog bed, there's pictures of family holding it, and my personal favourite, updates about bowel movements. "Whiskers isn't feeling well today, better make the hubby change the litter box today..." Next time you're scrolling through your news feed, you'll notice your friends who had animals, I'm sure everyone have got at least one on their friend list.