Cowthink is a variation of the Cowsay utility. She does the same thing as Cowsay, but outputs a drawing of a cow and her message in the field of thinking, not in speech. That is, the drawing of the cow will be inside the cloud of thoughts, as if saying that the cow is thinking or thinking about the message.
This allows you to add an extra joke or meaning to the command line output. Cowthink can be used in the same way as Cowsay, with various flags and parameters to customize the appearance and behavior of the cow drawing in the field of thinking.
A program very similar to the first one. Cows can not only talk, but also think. It is installed together with cowsay, so you don't need to install anything extra:
Or so: