The context of the “yelping dog” dictum is well explained in the following passage:
"When philosophy was invented it found another intellectual enterprise already in possession of the field, and that enterprise was poetry, primarily Homer and Hesiod. Plato, in trying to make intellectual space for philosophy, made so much space that he risked pushing poetry out of the field altogether as an intellectual enterprise. Plato assumes that poetry and philosophy are competitors in the same business; he can then be seen as attempting to make a hostile take-over bid.”
In reality, philosophy cannot do without poetry. I’ve written some notes on that here.
Illustration: Goya’s dog (detail). The dog does not bark nor yelp, I know, but it is the singular most beautiful image of a dog I know.