What's the adjective for grunts? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs grunt and gruntle which may be used as adjectives within certain contexts.
“They let the hog loose, and the squeal subsided into a grunty moaning as it wandered erratically, the red draining pink into the snow around the yard.”
“Grunty Pig did not even thank the muley Cow for warning him.”
“Grunty Pig meant to uproot the apple tree where they had their nest.”