Skip to main content

Questions tagged [dogs]

The common name for Canis lupus familiaris, which are domesticated canines.

Filter by
Sorted by
Tagged with
-1 votes
2 answers
122 views

Has artificial selection / selective breeding ever been targeted at intelligence?

Has it ever been attempted to breed a species, for example dogs, to maximize some aspect of intelligence? I find it particularly interesting to imagine one could selectively breed dogs to be able to ...
Julius Hamilton's user avatar
3 votes
3 answers
366 views

Why are dogs descendants of Wolves but humans are not descendants of chimpanzees?

From here The dog, Canis familiaris, is a direct descendent of the gray wolf, Canis lupus: But from here Human and chimp DNA is so similar because the two species are so closely related. Humans, ...
user avatar
0 votes
0 answers
44 views

Do African wild dogs have sharper teeth than domesticated dogs?

When I see African wild dogs hunting it appears easy for them to tear open their prey, whereas when a dog like a pitbull terrier bites a wild animal it looks like more of a just bite crush or puncture ...
Lightsout's user avatar
  • 101
3 votes
1 answer
236 views

Can dogs see infrared radiation, i.e., heat?

I, like most of my fellows, prefer my meals served piping hot. As all know, humans sometimes feed their dogs table scraps. If I put down a small piece of chicken from within a piping hot chicken pot ...
the_fens's user avatar
0 votes
1 answer
257 views

If massive animals live longer, why do humans with gigantism die younger?

What I mean is humans suffering from gigantism (type 1 neurofibromatosis, Marfan syndrome, X-linked dominant acro-gigantism, et cetera) rarely live more than 5 decades (50 years). The same can be said ...
mammifereviolet4694's user avatar
0 votes
0 answers
94 views

Why do huskies have markings above their eyes

[1. Dogs in Antarctica pulling sleds
Kinnear Harper's user avatar
2 votes
1 answer
69 views

Did the jackal (wild African dog) evolve independently or with some form of human domestication?

The jackal is a wild dog species in Africa that feeds on carrion, much like the hyena. Pop science, as it were, would make us believe every dog species emerged as a result of human domestication. Was ...
amorimluc's user avatar
  • 131
1 vote
0 answers
60 views

Do dogs and cats know the names of other people / pets in the house?

I have a dog named Penny and a cat named Milo. I always wonder if Milo knows Penny's name, and vice versa. So if I call Penny, does Milo know that I just called her? Similarly for humans, if someone ...
Mike Willis's user avatar
0 votes
1 answer
147 views

Can a dog run 150 km non-stop?

In Werner Herzog's 2010 documentary Happy People: A Year in the Taiga, a dog is reported to run 150 km from the Taiga back to the owner's village, without any stop and seemingly at full speed as it is ...
francoiskroll's user avatar
2 votes
2 answers
190 views

Nature versus nurture regarding aggression in specific dog breeds

A week ago I was bitten in my face by a dog that originally came from an asylum. That dog is half Rottweiler. Some people claim that the history of the dog is probably different from what the asylum ...
Albert Hendriks's user avatar
0 votes
0 answers
347 views

How long it takes medium size dog's corpse being decomposed?

I am not a Biology student or expert. Moved the post from Pets SE. Around a month ago, my 12 years old dog passed away. And I buried her in our front yard (mostly soil, 1 meter depth, wrapped in some ...
adadion's user avatar
  • 117
3 votes
1 answer
132 views

Could we breed a dog to the size of a thumb?

We've gotten from a wolf to a small breed such as a chihuahua. So the question is: can we go even further and have a dog as small as a thumb (adult dog)? If not, what are the factors that limit the ...
stackzebra's user avatar
1 vote
1 answer
374 views

How many teeth can "African wild dogs" have?

The New York Times article In Mozambique, a Living Laboratory for Nature’s Renewal discusses reintroduction of what the article calls only "African wild dogs" into Gorongosa National Park in ...
uhoh's user avatar
  • 5,598
7 votes
1 answer
98 views

Best colour for a dog to track an object against green background

As dogs have limited colour perception, what colour would appear with most contrast against a green background for a dog? I understand that red and green are very close in a dog's colour perception, ...
gingerbreadboy's user avatar
4 votes
2 answers
679 views

Did Darwin explain why he believed that domestic dogs descend from several distinct species of ancestor?

Charles Darwin begins his book Origin of the Species (1859), in which he argues that species evolve as a result of variations caused by natural selection, with a chapter about variations that have ...
user avatar
2 votes
1 answer
81 views

What advantage do dogs have in clearly disclosing whether they are afraid or unafraid in a conflict?

Dogs are known to clearly show whether they are afraid or unafraid with the posture of their tails during a conflict. How and why is this beneficial? My limited understanding makes me feel that, in ...
Ritesh Singh's user avatar
3 votes
1 answer
167 views

Why are dogs so selective about choosing a spot to defecate?

Anybody who walks a dog knows that dogs are normally selective about choosing a spot to defecate. They sniff around for a long time, while I just want to be on my way. I understand about marking ...
Karl Kjer's user avatar
  • 7,693
77 votes
3 answers
15k views

Why shouldn't dogs eat chocolate?

I was wondering why dogs shouldn't eat chocolate. Can't dogs just excrete the indigestible component in their droppings? It's common knowledge that dogs shouldn't eat chocolate. What I don't know is ...
rockinboy3303's user avatar
15 votes
2 answers
53k views

Why do these 2 dots frequently occur in dogs' eyebrows? Does it serve/served any advantage?

I have been wondering why, in spite of the variation in color-patterning in dogs, these 2 dots (1 on each eyebrow) seems to be frequently occurring. Dog-1: This one has a white dot. Photographed from ...
user avatar
3 votes
1 answer
2k views

Do pet animals and humans perceive good and bad smells differently

As the title says, just wondering if there is a difference in what animals like dogs and cats perceive as good smell vis a vis humans. Example : Smell of some flowers - great . Fart smells - bad.
NewPostdoc's user avatar
6 votes
3 answers
963 views

Do animals' facial expressions have similar meanings to humans'?

In the following pictures, the dog seems to be smiling to the camera. People staring at these picture also tend to feel comfortable and relaxed, presumably because they think it's very happy playing ...
nalzok's user avatar
  • 487
-1 votes
1 answer
986 views

Do any dogs have blue iris - not just sclera? [closed]

I was looking in to the question of whether any dogs in fact have "blue eyes"... A quick search gives plenty of information on and images of dogs with blue sclera and black iris. Every "blue-eyed" ...
Fattie's user avatar
  • 11
0 votes
2 answers
380 views

When did the most recent common ancestor of all living domestic dogs live?

Wikipedia provides a very detailed page on the origins of the domestic dog, but this fact does not seem to be present there. Google searches for terms such as "most recent common ancestor (MRCA) of ...
user1205901 - Слава Україні's user avatar
4 votes
0 answers
464 views

How long a dog can remember its owner's smell?

Can dog remember multiple smells? and how long it can remember a smell?
Muthu kumar's user avatar
1 vote
1 answer
936 views

Evolutionary advantages of wet nose of cats and dogs?

Everyone knows that some animals, at least cats and dogs, keep their noses wet and cool. But why did they evolve it? What evolutionary advantages does it provide? Smell-sensing cells need cooling for ...
Raegdan's user avatar
  • 21
13 votes
1 answer
19k views

Why do human eyes glow red on a photo and dog's eyes green?

Previous Research I know that cameras sometimes come with an anti "red eye" functionality that involves two flashes, presumably the second flash coincides with the shutter opening. Question Why do ...
hello_there_andy's user avatar
11 votes
2 answers
840 views

Can canines communicate with each other using gaze direction?

After researching why humans have white scleras when most primates have dark scleras, I stumbled upon the cooperative eye hypothesis. It proposed that white scleras may have evolved on behalf that it ...
BluWasabi's user avatar
  • 301
6 votes
1 answer
2k views

Do wolves bury food like dogs?

Many breeds of domestic dogs seem to like burying food, presumably in preparation for leaner times. Assuming that dogs evolved from animals similar to the modern wolves through a mix of natural and ...
Superbest's user avatar
  • 4,520
0 votes
1 answer
24 views

What studies are there showing the effectiveness of any substance on canine hypertension?

Searching on http://www.ncbi.nlm.nih.gov I could only find the article titled as "Telmisartan Treatment of Refractory Proteinuria in a Dog".
shooting-squirrel's user avatar
2 votes
0 answers
140 views

How did the roar evolve from snort?

When Lions roar, or Dogs show aggression, they do that snort-roar thing. They're producing sound while inhaling. How did that come to be when all (?) other forms of sound involve exhaling? Humans do ...
laggingreflex's user avatar
11 votes
1 answer
516 views

Dogs bark at familiar person in Santa costume. Why? Don't dogs trust smell over vision?

Last night 10 humans and 2 dogs spent Christmas together. At some point, one human dissappears for a few minutes and comes back wearing a full Santa outfit. Upon respawning, the dogs start barking ...
user2811095's user avatar
4 votes
1 answer
169 views

How diverse are dogs in their traits other than appearance?

I've asked this question about dogs not so long ago, and the short answer was - dogs are the most diverse looking species of mammals because they got a small number of genes that have a big impact on ...
Alex Stone's user avatar
  • 6,515
5 votes
1 answer
415 views

Is there a DNA test to identify dog mixes?

We adopted a dog at the age of two. Our vet said it was a mix of an Australian Shepherd and Border Collie, which we've told everyone. Based on markings, I think it's likely. I am wondering, however, ...
Jim Ericson's user avatar
10 votes
3 answers
610 views

Can any species be bred selectively/engineered to become as diverse looking as dogs?

I've done some research and it appears that dogs are the most diverse looking single species of mammals. The questions that interest me is - are dogs special in respect to genes/gene activation ...
Alex Stone's user avatar
  • 6,515
24 votes
1 answer
35k views

Why do dogs try to cover their poop?

It may seem obvious to us humans to hide our excreta, but this is not quite normal behavior for animals. Interestingly, dogs have the habit to pee all over the place. It's know that they do so to ...
Steven Roose's user avatar
  • 1,393
10 votes
1 answer
5k views

Are there dog breeds that are so far apart genetically that they can't produce viable offspring?

Obviously, a very large dog would have difficulties mating with a very small dog and vice versa. But putting that problem aside (using, say, insemination), considering the large variation of dog ...
Zano's user avatar
  • 207