You might have heard of cowsay, software that generates ASCII pictures of a cow with a message. cowsay isn’t limited to cow depictions, it also shows other animals, including Tux the Penguin.
Less well known is ponysay, a wonderful alternative to cowsay. It’s a rewrite of cowsay with lots of full-color characters from My Little Pony. There’s over 400 characters and character combinations. While cowsay is written in Perl, ponysay is developed in Python.