They aren't altered; they are simply pictures of Larry trying to be one of the big boys.
If primates are pros at communicating to humans through the usage of computer symbols and pictures (Jane Goodall's Studies), then human beings, who were blessed by God to be able to speak because we have the vocal capability and our language is arbitrary, should be able to utilize these human capabilities to the fullest of extent. We are more intelligent than primates HOWLIN, let's show it.
It's Larry at his very best.