> How did it know!?

It doesn't. It's a canned response. I tried this prompt

  draw a dog with a hat in ascii art

I got the exact same ascii art:

   Sure, here's a simple ASCII art of a dog wearing a hat:
   /_/\
  ( o.o )
     ^ <

  The hat is the ^ symbol, and the dog's ears are the `/_/" symbols. I hope you 
  like it!

PS: OK, not exactly the same- the model swapped the ">" on the bottom with a "\" at the top.