Install cowsay by entering the following commands in the terminal:
sudo apt update sudo apt install cowsay
Description:
configurable talking cow
Cowsay (or cowthink) will turn text into happy ASCII cows, with speech (or thought) balloons. If you don't like cows, ASCII art is available to replace it with some other creatures (Tux, the BSD daemon, dragons, and a plethora of animals, from a turkey to an elephant in a snake).
Homepage: https://web.archive.org/web/20120527202447/http://www.nog.net/~tony/warez/cowsay.shtml
Version: 3.03+dfsg2-4
Section: universe/games