If you're a social media maven, you may have noticed a bloom of animal selfies over the past few years.

A baby monkey grasps a tourist's fingers at a temple in Thailand. While many wildlife tourist sites are legitimate, an Instagram campaign is highlighting how some are more sinister in the ways they promote animal selfies. Photo by Paula Bronstein/Getty Images.

You know the ones I'm talking about — a friend or celebrity posing with a monkey on their trip to Thailand, or holding a koala in Australia, or bench-pressing a whale. (I kid. Please don't try to bench-press whales).