At the grammar-monster website an example is given in the Hot Tip section: step 1 (large proud rooster) It said if you can add the word 'and' inbetween the two adjectives no hypen is needed. However, should there be a comma required? (large, proud rooster).

thanks

I'd tend to use a comma in this type of example.

Good question.

This is about enumeration of adjectives. There is a lot of leniency on this. A comma is acceptable but not required.