(1) Dogs, unlike children, can be quasi-abusively and covertly restrained, confined, and punished without the ability of the dogs themselves to verbally disclose whatever possible or degrees of mistreatment to those unable to understand dog utterances.
(2) Dogs, unlike children, are disposable, and can legally be "put to sleep" without recrimination, and do not require elaborate burial and funeral expenditures.
(3) Dogs do not require the tedium of dictionary-vocabulary training, nor the pricey cost of high-school and particularly college training, and cannot be considered truant for not attending school.
(4) Dogs, unlike older children, cannot talk back to you, do not swear profanity nor vulgarity, and never respond with nor initiate sarcastic remarks. They never stab nor shoot nor explode you with bombs. They do not pollute with intrusive non-solicited sound waves consisting of the constant commercial-establishments barrage of background erotic-feminist singing noise nor big-bass-speakers boom-booms imposed by show-off nigroid in fancy cars.
(5) Dogs, unlike children, do not require ever-changing and increasingly-expensive clothing wardrobe, including diapers or tampons or sanitary napkins - being that they freely roam around completely nude in public with impunity.
(6) Killing a dog (even a police dog, often misnamed: "officers") is neither execution nor murder, in contrast to terminating children or larger humans; it is simply called: "killing."
(7) Dogs, unlike children, do not have free wills and operate merely on rather-predictable instinct in response to environmental stimuli; they do not get hooked on narcotics, do not smoke, do not get drunk, do not spray-paint obscene graffiti on walls, and never fornicate, adulterize, nor sodomize as to punishable-by-law immoral infractions.
(8) Dogs, unlike children, do not require use of pregnancy preventers by and inside anti-conception planned-parentlessness humans nor pregnancy in humans for canine reproduction nor dog-coming-out-of-the-mouth-of-the-womb childbirth-equivalence by humans (see RSV's Hosea 13:13); they come already made. As a very-liberal paraphrase of Job 11:12 in the Old Testament puts it: "But a stupid human will get understanding, when a bitch's pup is born a man."
(9) Dogs give their owners a feeling of superiority dominating them and their movements by quasi-tyrannically tugging on their necks with a leash (such is typically not done pertaining to children), and dogs are amusing moving objects so dependent upon their owners for food and water provisions while providing sensual (if not quasi-sexual) gratification to and for their owners who affectionately fondle and caress them with semi-erotic tactile-stimulation borderline-bestiality petting (violating Leviticus 18:23). The titillative wagging tail swinging back and forth when owners and their dogs encounter each other satisfies a subconscious longing inside nearly-animal-worshipping owners to see the quasi-equivalence of an excited penis wildly responsive without the disappointing and boring lethargy of erectile-dysfunctional limpid flaccidity so common nowadays among porn-saturated overly-masturbated humans.
(10) Although getting more and more expensive, the variety of menu for dogs is much less than is required for children, and dogs do not have the extensive plethora of medical problems and profoundly-costly treatments children get.
(11) Dog owners do not have to train morality in dogs, in contrast to children, which appeals to those who would make themselves uncomfortable getting themselves (of necessity and by default) involved with obligations to the source of morality (e.g. the Bible and righteous Creator thereof).
(12) Getting a dog for superficial and limited-potential companionship instead of getting married to an opposite-gender human and going through the elaborate cycle of pregnancy and childbirth, and all that accompanies that, is a way for the wicked to raise their 3rd finger and thumb their nose against God's command to: "Be fruitful and multiply" (in Genesis) and "Have the younger women marry and bear children" (First Timothy 2 and 5) allowing proxy support for homosexuality, feminist sexism, abortion homicide as a choice and NOT a "right," brainwashing themselves and others with the anti-creationist non-scientific heretical myth of evolution, etc.