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14

It's definitely a bird pelvis (synsacrum). Based on the size (~30 cm), it came from a very large bird. Unfortunately, comparative images of bird pelves are rare on the internet. Some possibilities (large birds of Sweden possibly found on the coast): Great northern loon Golden eagle Common crane A loon skeleton (from ...


13

Interestingly there is a inverse negative correlation between heart rate and life span, meaning the faster your heart rate is, the shorter is your lifespan. See this figure (from the paper 2 cited below): When the authors plotted the approximately total heartbeats vs. the lifespan, the amount of total heartbeats was in a pretty narrow corridor: So it ...


6

After some more searching, I think stumbled across the answer. It appears to be an… Eriophora ravilla: Source BugGuide.net. This species appears to have quite a diverse range of colors, and even thought I haven't found one that quite matches mine, the other similarities (the large abdomen, the stripe down the back, the four 'dimples', and the ...


4

That is a threat face. Barbary macaque threat faces often appear with a brow raise, lowered head, and an o-shaped mouth, sometimes with and sometimes without a vocalization. Given the context you described it is not surprising the girl received a threat. *Based on personal research experience


4

It looks like it is trying too threat. Source: Individual differences in scanpaths correspond with serotonin transporter genotype and behavioral phenotype in rhesus monkeys (Macaca mulatta)


4

Insomnia most certainly occurs in other animals. One interesting example is the case of insomnia in Drosophila melanogaster. In this study 3 day old male and female flies that demonstrated reduced sleep time were crossed together over 60 generations to create flies insomnia-like (ins-l) that sleep less than 60 minutes a day compared to 800 min a day in their ...


3

Color vision was shown to be dichromatic (sensitivity to two color peaks) by Neitz et al. (1989). For a broader review of color vision of mammals, see Jacobs (1993). Literature Cited Jacobs, G.H. 1993. The distribution and nature of colour vision among the mammals. Biological Reviews 68: 413-471. Neitz, J. et al. 1989. Color vision in the dog. Visual ...


3

Indeed a very good question. I'm afraid it might remain without a proper anatomy-based answer, but my intuition would tend towards agreeing with "the smaller you get, the more deviation you'll find". Or rather, I would expect the same principle as in conservation of genetic patterns to apply here: the more central a tissue structure is to survival, i.e. the ...


3

As the previous answers clarify, all organisms have heritable traits that may be manipulated through selective breeding. It is the pragmatics that can be prohibitively challenging. From an (zoo)archaeological point of view, few animals have actually been domesticated, and only recently in our species' history. The dog is an unusual case, perhaps domesticated ...


2

The answer is... basically none. The variability is high, and can also happen in the macroscopic range. If you want a quick-and-dirty idea of the fraction of the population presenting a certain variability in humans, I would suggest a good anatomy atlas or manual. A good resource would be Gray's Anatomy (the book, not the soap ;-). Apart from that, @Armatus ...


2

As everybody, I don't fully understand your question. Can you please add your definition of domestication? Would you consider domestication as soon as human can select for heritable traits? If yes, then the question may be split in two: Do all animal populations have heritable traits? Yes! But Depending on what kind of traits you want to consider no ...


2

Cattles actually hate shrubs which are very tough to break and tasteless(for a cow). Some plants they won't touch are: Lantana urticoides (West Indian shrub verbena), Malvaviscus arboreus var.drummondii (wax mallow) Rhus copallinum (winged sumac) Viburnum acerifolium (mapleleaf viburnum). Morella cerifera (wax myrtle) Ilex vomitoria (yaupon). Source: ...


2

I'm not a medical professional, so this isn't exhaustive or guaranteed 100% accurate: You can live a (*mostly) normal life without your: appendix tonsils spleen gallbladder pancreas portions of your liver (pieces can be removed and it will regenerate) portions of your small or large intestines both lungs (one is needed) both kidneys (one is needed) ...


2

Harpaphe haydeniana or the Cyanide millipede They are called cyanide millipedes because they ooze cyanide gas from their bodies when they feel threatened which gives off an almondy smell. They don't bite and they are not harmful to human beings but it is advisable to wash your hands if you pick one up (reference 1, reference 2 and reference 3).


2

While their work was in the cat rather than the dog, your starting point should be the work of Hubel and Wiesel. They are the indisputable pioneers for vision research in general. They won the Nobel Prize in 1981 for Physiology and Medicine. See their Wikipedia entries (Hubel and Wiesel), the original 1962 paper, their popular press book, the Nobel Prize ...


1

Biology is not deterministic. Traits like this have variable expressivity. A phenotype with 100% expression in a population with an allele is said to have complete penetrance. There is no gene which could specify a single blood vessel pattern that could have complete penetrance. Variable expressivity means the same genes yield a spectrum of forms of the ...


1

Yes. Once secreted the shell cannot increase in size, so that the growth of the body is accompanied by continuous growth of the shell, i.e. by the gradual increase in the number of the whorls. This also means that the topmost whorls are the oldest and the aperture marks the front of the new shell.


1

Many examples of animals which have more difficulty maintaining their population size than humans exist. This is partially why some species go extinct. The Tasmanian Devil is at high risk for extinction from a genetic predisposition for cancer onset by infection. Your premise that humans are unhealthy is not sound. Humans are long lived, genetically diverse ...


1

I will Suggest: Selective Breeding in Aquaculture: An Introduction Authors: Trygve Gjedrem, Matthew Baranski ISBN: 978-90-481-2772-6 (Print) 978-90-481-2773-3 (Online)


1

The dog was probably freaked out by the weird costume. Humans do it all the time (I've been seeing Halloween decorations for sale since early August, which is terrifying) but we generally comprehend what's going on. Dogs may not fully understand the idea of a costume, much as a human infant might be scared by masks or beards (or the sudden removal ...


1

Nictitating membrane (inner eyelid) of sharks can cover sharks eye as it moves from the upper to the lower eye lid (http://en.wikipedia.org/wiki/Nictitating_membrane).


1

Actaully there are quite a few animals which actually moves there lower eyelids: Most of the birds Reptiles(Except Snake) Amphibians



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