If you vacation on Cozumel, you might be lucky enough to see one of the island’s most charming inhabitants, Procyon pygmaeus, or the Cozumel raccoon. It is not unknown for them to hang around picnic sites looking for food handouts, but tourists throwing these bold little animals scraps of food — and tortilla chips seem to be a favorite — probably don’t realize they are feeding one of the most endangered mammals in the world. Procyon pygmaeus is …