Worsted weight (#4) yarn is what was used for the hat, nose, ears and muzzle.
Size 10 crochet thread was used to make the eyes.
You make the hat and then layer on the details to make the dog's face.
Intermediate pattern.
You will need to know how to single crochet, half double crochet, double crochet and decrease.
This is a pattern of my own design. Author holds all rights.