I think people can go to the pound & get a mix if they want it (for far less than buying hybrid) and at the same time, SAVE A LIFE; too many dogs need homes. I also find for those who want a breed, they want a specific temperament/size/color/coat-type etc. and therefore ought to be able to get it – if they want to, although responsible purebred adoption groups also abound.
References :
25 yr of owning Weims; 15 yrs doing Weim Rescue.
If you want to adopt a purebred Weimaraner try either: the WCA rescue program or http://www.petfinder.com

The domestic dog is a subspecies of Canis Lupus. For some perspective, the Arctic Wolf is considered a subspecies of Canis Lupus. In other words, dogs and wolves are essentially the same species. The only notable difference is the selective breeding for exaggerated phenotypes and different hormone levels to create a more docile, controllable, trainable, adaptable pet. The term "hybrid" should probably never be used when describing ANY subspecies of Canis Lupus mixed with Canis Lupus. A true hybrid could arguably be mixing Canis Lupus with the coyote or jackal.

As for wild canids, there are coyotes, jackals, foxes, maned wolves, red wolves, african wild dog, dingo, etc.

As for domestic dogs most related in behavior to wild canids, it depends on which breed you’re talking about. The behavioral patterns of wild canids varies greatly from species to species. Some have more rigid pack structures while others have less enforced, more casual structures (dogs, coyotes). Some are more solitary (foxes, jackals).

As for what is most similar to what in appearance, the Spitz breeds are often confused for wolf mixes.

As for what is most recently related to wild canids, dingoes were used in the creation of the Heeler breed. Wolves were used to create two "hybrid" but now entirely domesticated European breeds.
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The dingo is actually a man-made animal. When man settled Australia, they brought many invasive species. one of them being feral dogs. In the time since then, the feral dogs have developed into the dingo…the dingo is not a native species, but it seems to have settled into the Australian wilderness quite well.

You can’t hybridize within a species. the dog (canis familiaris) is one species. A mixture of two or more breeds is not a hybrid, just a mixed breed or mutt.
A hybrid is something created between two related, but seperate species.

Wolves and dogs are too closely related to create a true hybrid.
But a coyote and a wolf would be a hybrid.
A wolf and an African Wild Dog would be a hybrid.
A Lion and a Tiger is a hybrid called the Liger/tigon (depending on which is the mother and which is the father)
A Donkey and a Horse is a hybrid called the Mule/Hinny (Same with the liger/tigon)

True hybrids are often sterile and are commonly only one gender. Its nature’s way of saying ‘no that won’t work’…

A wolfdog is still a fertile animal and can breed, thus, is not a hybrid.
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Simple genetics.

Not even bothering with the hybrid dog question.
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it was so many years ago that wolves were in ancestry, can’t be counted
there are dog breeds that over 2000 years old.

appearance i would have to say husky and malamute
behavior, none
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If you have access to a holistic doctor (that does acupuncture) you could be desensitized to the saliva so it would no longer be an issue for you. (MY Dr uses a process called NAET, for allergies).
References :
25 yrs in Weims; 14 yrs vet tech.