This ad campaign by WWF shows the remaining population of each animal as represented by

This ad campaign by WWF shows the remaining population of each animal as represented by the number of pixels,
(TITLE FROM REDDIT)
Title still appears to be incomplete, OP might have intended to write more, but decided not to, and forgot to remove the last comma

What is the bottom right one, it looks like a fox but I don't think they're endangered?

Hmmmmmmm, if our ancestors raised these animals as livestock I wonder if they wouldn't be in this predicament now.