If you've been around the PHP community (or language) for any amount of time, you've noticed that the mascot for the language is an elephant. Back in the mid-2000s this mascot made a move into the real world and the first blue elePHPants were released as plush toys. Since then several different groups and companies have produced their own versions with their own colors and logos. There's several of them out there and the Field Guide to ElePHPants site lists them all.

The PHP elephpant, Elephpas hypertextus, was first sketched by Vincent Pontier in 1998. For ten years it was only seen in drawings. The plush elephpant was first sighted in 2007. Since that time a large number of variations have been observed in the wild.

The site covers fun facts about their overall appearance, identification of the generations, their "natural habitat" and how they're distributed. They then list each of the elePHPants including pictures, talking about the origins of each and several that are "coming soon" from other groups/conferences. Some of the elePHPants are more rare than others (like the Gold of which only one was produced) but more and more are coming on the scene all the time, usually as a part of Kickstarter campaigns.