If you lie down with dogs you’ll rise with fleas

Similar English and Irish sayings:

Better for a man to have even a dog welcome him than a dog bark at him Better for a man to have even a dog welcome him than a dog bark at him
The cat is always dignified, until the dog comes by The cat is always dignified, until the dog comes by
A living dog is better than a dead lion A living dog is better than a dead lion

Proverbs and English sayings