2016 Pranked by Audubon. Elephant cognition. Elephant cognition is the study of animal cognition as present in elephants.
Most contemporary ethologists view the elephant as one of the world's most intelligent animals. With a mass of just over 5 kg (11 lb), an elephant's brain has more mass than that of any other land animal, and although the largest whales have body masses twenty times those of a typical elephant, a whale's brain is barely twice the mass of an elephant's brain.
In addition, elephants have around 257 billion neurons.[1] Elephant brains are similar to humans' and many other mammals' in terms of general connectivity and functional areas, with several unique structural differences. Although initially estimated to have as many neurons as a human brain,[2] the elephant's cortex has about one-third of the number of neurons as a human brain.[1] Structure of the brain[edit] Cerebral cortex[edit] Asian elephants have the greatest volume of cerebral cortex available for cognitive processing of all existing land animals. Mutual medication in capuchin monkeys – Social anointing improves coverage of topically applied anti-parasite medicines. Primate Nooz Home Page. Uli Westphal. Elephas Anthropogenus After the fall of the Roman Empire, elephants virtually disappeared from Western Europe.
Since there was no real knowledge of how this animal actually looked, illustrators had to rely on oral and written transmissions to morphologically reconstruct the elephant, thus reinventing an actual existing creature. This tree diagram traces the evolution of the elephant depiction throughout the middle ages up to the age of enlightenment. ( click on drawings for magnification & additional information ) 2008 | inkjet-pigment-print on canvas ( 225 cm x 150 cm ) | cardstand This work was part of my Masterthesis at the Institute for Art in Context of the UdK, University of Arts, Berlin A manuscript about this work was published in 2015 in Zoologischer Anzeiger Vol. 256, Journal of Comparative Zoology, Munich, Germany, Elsevier, ISSN 00445231, pp. 36-41 Since 2009 it is on permanent display at Phyletisches Museum, Jena, Germany All content © Uli Westphal.
How a Quarter of Cow DNA Came From Reptiles. David Adelson, from the University of Adelaide, charted the gene’s travels in 2013 by comparing the subtly different versions of BovB in dozens of animals.
That was when his team showed that BovB in cows and other cud-chewing mammals is most similar to the versions in pythons and vipers—and likely descended from them. Now, Adelson’s colleague Atma Ivancevic has extended the search for BovB to more than 500 animal species. And her results show that the gene’s travels are even more erratic than anyone thought. Genes change over time, and closely related species have more similar versions than distantly related ones. So, if you compare different versions of the same gene across a range of animals, you can usually create a family tree that shows how they’re all related. When Ivancevic did the same exercise for BovB, which jumps between species horizontally, she got one of the weirdest family trees I’ve ever seen.
This idea makes sense in principle, but it’s hard to imagine in practice. How did the observation of Gerald the Muskrat go viral on inaturalist? - Nature Talk - iNaturalist Community Forum. Muskrat from Brandeis University, Waltham, MA, US on April 17, 2017 at 12:20 PM by dongminsung. Confirm? · iNaturalist. Bat embryos with the skeletons dyed are kinda creepycute. Ever wonder what an embryonic bat's skeleton would look like if the cartilage were dyed with alcian blue stain?
Wonder no more. Rodrigo G. Arzate-Mejia, Marina Venero Galanternik, William Munoz and Jennifer McKey snapped this remarkable image. Scott Weatherbee of the Memorial Sloan Kettering Cancer Center captured this image: • Embryonic Bat Skeleton (via Science Llama) Tropical Storm Fay imaged by NASA's Atmospheric Infrared Sounder (AIRS) NASA’s AIRS instrument captured this image of Tropical Storm Fay around 2 p.m. local time on July 10, 2020, as the storm swept through New England. This is how some snakes can fly. HYBRID AND MUTANT ANIMALS. THE CAT IN URBAN MYTHOLOGY. What are antlers and why do deer have them? Summary Antlers are bony structures, distinct from horns, unique to deer and carried by the males of most species – exceptions include the Chinese water deer (Hydropotes inermis) and the Musk deer (Moschus sp.), neither of which possess antlers, and the reindeer or caribou (Rangifer tarandus) in which both sexes grow antlers.
Antlers grow from pedicles, permanent outgrowths of the skull’s frontal bone, and are covered by a layer of hairy skin called velvet during their development. An increase in circulating blood testosterone leads to a shedding of the velvet and reveals the antlers in time for their use during the breeding season. Thus, in most species, antlers develop while the testes are in a regressed state – the exception is the Reeves’ muntjac (Muntiacus reevesi), which remain fertile throughout the year but grow and cast antlers cyclically. Males use antlers when battling with each other for access to females during the rut. The Details Osteology 101: bone biology and pedicles and.