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The overall shape appears to match that of a flatworm or planarian, but those don't have eyestalks. Also, in the images you posted, none of the worms appear to have the characteristic eyespots of a flatworm, although they DO look planarian-like in some photos: If they didn't look so thin, I'd say they were common garden slugs. We get them all the time ...


I am not too sure but this seems like Polycelis sierrensis. Though it is apparent that the worm in your pictures is a tricladid planarian, I was not too sure about the species and the geographical distribution. However, from the Smithsonian list of freshwater planarians in North America, I deduced that this should be Polycelis sierrensis which is found in ...


It looks pretty much a leech to me. https://en.wikipedia.org/wiki/Leech


Their capacity to elongate / contract and their two head lobes make me think they are Planarians. The two points on their heads must be their eyes: https://en.wikipedia.org/wiki/Simple_eye_in_invertebrates#Ocelli_or_eye_spots


Short answer Echolocating bats have relatively large sensory epithelia in their inner ear, that may correlate with their high upper frequency limit of up to 200 kHz. The basilar membrane is thinner and stiffer, possibly allowing it to decode higher frequencies. Background In terms of the place theory of hearing, the cochlea acts as a frequency transformer, ...


No and yes. What you perceive as domestication has a lot to do with intelligence or even social intelligence of animals. Common fish is too stupid (from our point of view), to have any social bond with humans. Mammals are usually much closer and have similar structure of intelligence and patterns of behaviour. That only if you consider domestication as ...


Not all animals are equally predisposed for domestication. To be easily domesticated, animal should have: Flexible diet - and not compete with humans for food Reasonably fast growth rate Ability to be bred in captivity Pleasant disposition Temperament which makes it unlikely to panic Modifiable social hierarchy Wikipedia link above has plenty of ...


Short answer One way to distinguish between the olfactory and gustatory system in fish is by their anatomical differences. For example, olfactory receptors are clustered in the nasal region, while gustatory receptors are scattered in the head region and beyond. In turn, olfactory information is sent via a single cranial nerve to the brain, while the ...


This animal is moth larva. The images presented are blurry, but if there are no any dots on the larva my first suggestion is: pantry/Indian meal moth larvae - "They are a common grain-feeding pest found around the world, feeding on cereals and similar products." (picture source)


That jumping spider is a Jumping Spider! (That is, family Salticidae, commonly called Jumping Spiders). There's a lot of diversity in the family, but your pictures look similar to the Zebra Jumping Spider.


Actually, the animal is not a caterpillar but larva. The species is Abia lonicerae Sawfly, discovered by Linnaeus 1758. (Another picture)


Short answer Excretion of blood and urine may prevent overheating by reducing body temperature through evaporative coolong (akin to perspiration). Excretion of blood urine also concentrates the ingested blood. Background Female Anopheles mosquitoes seek blood for nutrients necessary to egg production. The cold-blooded insects may excrete some freshly ...


As @Ilan wrote, this is a Cantharidae but most probably Cantharis fusca, which is very common species in northern Europe. Cantharis rustica is similar but has reddish femurs and the black spot is more centered on the pronotum. It is not C. lecontei, which is a North American species. If you go looking at flowers of Anthriscus sylvestris for an hour or two, ...


The beetle resembles Soldier beetle, especially Cantharis lecontei Soldier Beetles (Cantharidae) » Cantharinae » Cantharini » Cantharis


With arbitrarily broad meaning of "processed", yes. If absolutely nothing else, elemental purification and inorganic synthesis of something chemically resembling meat in nutrition is possible. Prohibitively expensive and stupid, yes, but possible. So then the question becomes exactly how much processing you need to do. Without clear bounds on that question ...


Of course it is possible for a carnivore to live with a vegetarian diet. Technically you could come up with a complete meal out of vegetables and make a carnivore pup live with it. Dogs and cats are good example of it. They can learn to eat vegi-processed food and as far the nutrients needed are present they will grow and live well. To make them eat raw ...

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