Dog

Boyd’s Bible Dictionary:

An unclean animal (Ex. 11:7; 22:317But against any of the children of Israel shall not a dog move his tongue, against man or beast: that ye may know how that the Lord doth put a difference between the Egyptians and Israel. (Exodus 11:7)
31And ye shall be holy men unto me: neither shall ye eat any flesh that is torn of beasts in the field; ye shall cast it to the dogs. (Exodus 22:31)
; Deut. 23:1818Thou shalt not bring the hire of a whore, or the price of a dog, into the house of the Lord thy God for any vow: for even both these are abomination unto the Lord thy God. (Deuteronomy 23:18)); regarded with contempt (1 Sam. 17:43; 24:1443And the Philistine said unto David, Am I a dog, that thou comest to me with staves? And the Philistine cursed David by his gods. (1 Samuel 17:43)
14After whom is the king of Israel come out? after whom dost thou pursue? after a dead dog, after a flea. (1 Samuel 24:14)
; 2 Sam. 9:88And he bowed himself, and said, What is thy servant, that thou shouldest look upon such a dead dog as I am? (2 Samuel 9:8); 2 Kings 8:1313And Hazael said, But what, is thy servant a dog, that he should do this great thing? And Elisha answered, The Lord hath showed me that thou shalt be king over Syria. (2 Kings 8:13); Matt. 7:66Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you. (Matthew 7:6); Rev. 22:1515For without are dogs, and sorcerers, and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie. (Revelation 22:15)); guards (Isa. 56:1010His watchmen are blind: they are all ignorant, they are all dumb dogs, they cannot bark; sleeping, lying down, loving to slumber. (Isaiah 56:10); Job 30:11But now they that are younger than I have me in derision, whose fathers I would have disdained to have set with the dogs of my flock. (Job 30:1)); scavengers (1 Kings 14:11; 21:19-23; 22:3811Him that dieth of Jeroboam in the city shall the dogs eat; and him that dieth in the field shall the fowls of the air eat: for the Lord hath spoken it. (1 Kings 14:11)
19And thou shalt speak unto him, saying, Thus saith the Lord, Hast thou killed, and also taken possession? And thou shalt speak unto him, saying, Thus saith the Lord, In the place where dogs licked the blood of Naboth shall dogs lick thy blood, even thine. 20And Ahab said to Elijah, Hast thou found me, O mine enemy? And he answered, I have found thee: because thou hast sold thyself to work evil in the sight of the Lord. 21Behold, I will bring evil upon thee, and will take away thy posterity, and will cut off from Ahab him that pisseth against the wall, and him that is shut up and left in Israel, 22And will make thine house like the house of Jeroboam the son of Nebat, and like the house of Baasha the son of Ahijah, for the provocation wherewith thou hast provoked me to anger, and made Israel to sin. 23And of Jezebel also spake the Lord, saying, The dogs shall eat Jezebel by the wall of Jezreel. (1 Kings 21:19‑23)
38And one washed the chariot in the pool of Samaria; and the dogs licked up his blood; and they washed his armor; according unto the word of the Lord which he spake. (1 Kings 22:38)
); enemies (Psa. 22:16-2016For dogs have compassed me: the assembly of the wicked have inclosed me: they pierced my hands and my feet. 17I may tell all my bones: they look and stare upon me. 18They part my garments among them, and cast lots upon my vesture. 19But be not thou far from me, O Lord: O my strength, haste thee to help me. 20Deliver my soul from the sword; my darling from the power of the dog. (Psalm 22:16‑20)).

Concise Bible Dictionary:

Constantly referred to in scripture as an unclean and debased animal: hence the unclean Gentiles or heathen are compared to dogs (Psa. 22:1616For dogs have compassed me: the assembly of the wicked have inclosed me: they pierced my hands and my feet. (Psalm 22:16); Psa. 59:6,146They return at evening: they make a noise like a dog, and go round about the city. (Psalm 59:6)
14And at evening let them return; and let them make a noise like a dog, and go round about the city. (Psalm 59:14)
). The price of a dog was forbidden to be put into the Lord’s treasury, it was an abomination (Deut. 23:1818Thou shalt not bring the hire of a whore, or the price of a dog, into the house of the Lord thy God for any vow: for even both these are abomination unto the Lord thy God. (Deuteronomy 23:18)). Hazael, a heathen, said, “Is thy servant a dog?” and the most offensive epithet was to call a man a dead dog. They were, and are, the scavengers of Eastern cities. All refuse is thrown into the streets and the dogs eat it. It was the dogs who ate the body of Jezebel, and licked up the blood of Naboth and of Ahab. In the New Testament it is the same: “without are dogs,” “beware of dogs,” used symbolically of those cut off and of the unclean: they return to their vomit again. The only apparent exception to the above is when the Lord compared the Syrophenician woman to a dog, and she said, “Yet the dogs eat of the crumbs which fall from their masters’ table.” In these passages the diminutive of the word is used, implying “little dogs, or puppies,” and these are often kept in houses until they grow up. But this does not remove the contempt implied in the term (Matt. 15:2727And she said, Truth, Lord: yet the dogs eat of the crumbs which fall from their masters' table. (Matthew 15:27)). Wyclif translated “houndis” and “litil whelpis” in Mark 7:27- 2827But Jesus said unto her, Let the children first be filled: for it is not meet to take the children's bread, and to cast it unto the dogs. 28And she answered and said unto him, Yes, Lord: yet the dogs under the table eat of the children's crumbs. (Mark 7:27‑28).