What did Elijah say would lick up Ahab's blood, as they had Naboth's?

Answer: Dogs

Elijah declared that dogs would lick up Ahab's blood just as they had licked up Naboth's.

“Tell him that this is what the LORD says: ‘Have you not murdered a man and seized his land?’ Then tell him that this is also what the LORD says: ‘In the place where the dogs licked up the blood of Naboth, there also the dogs will lick up your blood—yes, yours!’””— 1 Kings 21:19 (BSB)