You can change either of your Instagram names — your username or display name — whenever you'd like, but your username has to be unique.

You can quickly change how your Google name displays in Gmail through your account settings on a computer. Here's how to do it.

Let's warm up by trying on a few "human" names, starting with the boys. Since all sloths hail from the rainforests of Central and South America, many of our male sloth names come from Spanish or ...