ciao @Donna58, i’m pretty sure it is not, i have never heard of it. maybe “migliorare” was initially “mangiare”. The sentence would become “i’ll put myself in front of some crocchette and eat them”. Was the sentence said by some animal by any chance?
@Donna58 The first part is not a saying, the person was really joking about starting to meow to get attention, maybe in a cute way haha But "avere una fame da lupi" is a saying for when you're so hungry and almost starving, literally "I'm as hungry as a wolf"