a bite
Examples
You have something on your neck. What Looks like a bite mark, what were you doing out all night, anyway? Nothing. I went walking in the park. Tried to clear my head. And ran into a vampire What? No! I fell. On your neck?
If you're out, and starving, and need a bite to eat, then you need fast food.
People could put up with being bitten by a wolf but what properly riled them was a bite from a sheep.
A bite from a loving mouth is worth more than a kiss from any other.
A bleating sheep loses a bite.
Better a bite from a friend than a caress from an enemy.