'Dog's' in the Bible

Then Abner was very angry at the words of Ish-bosheth, and he said, “Am I a dog’s head [a despicable traitor] that belongs to Judah? Today I show loyalty and kindness to the house of Saul your father, to his brothers and his friends, by not having you handed over to David; and yet you charge me today with guilt concerning this woman.

“He who kills an ox [for pagan sacrifice] is [as guilty] as one who kills a man;He who sacrifices a lamb, as one who breaks a dog’s neck;He who offers a grain offering, as one who offers swine’s blood;He who offers incense, as one who blesses an idol.Such people have chosen their own ways,And their soul delights in their repulsive acts;