10 most difficult zoology riddles A list of ten (out of 175) zoology related questions that are the most often answered incorrectly Zoology quiz Which rodent has the highest ratio of brain mass to body mass?Beaver a large semiaquatic broad-tailed rodent that is native to North America and northern Eurasia. It is noted for its habit of gnawing through tree trunks to fell the trees in order to feed on the bark and build dams. The beaver has the highest ratio of brain mass to body weight among rodents, which is reflected in the behavior and the ability to act not only instinctively, but also logically. very hard 19% ratrat60%beaverbeaver19%squirrelsquirrel8%mousemouse10%Created by: Tschuka . Statistics based on 269 answers in 2 languages »rodents riddles » Which animals are the most threatened by a prion disease?Sheep. Scrapie is infectious and incurable. Recent studies suggest prions may be spread through urine and persist in the environment for decades. Scrapie occurs in Europe and North America, but to date, Australia and New Zealand (both major sheep-producing countries) are scrapie-free.very hard 21% cattlecattle33%catscats39%sheepsheep21%ducksducks5%Created by: ex-terminator. Statistics based on 6176 answers in 2 languages »diseases riddles » Which reptile subgroup is considered extinct?Synapsids were the largest terrestrial vertebrates in the Permian period, 299 to 251 million years ago, although some of the larger pareiasaurs at the end of Permian could match them in size. very hard 21% AnapsidAnapsid14%DiapsidDiapsid22%SynapsidSynapsid21%None of the above are extinctNone of the above are extinct41%Created by: Tschuka . Statistics based on 1022 answers in 2 languages »bones riddles » Monkey-eating eagle can be found in ...Philippines. The Philippine eagle also known as the monkey-eating eagle is endemic to the Philippines and can be found on four major islands: eastern Luzon, Samar, Leyte, and Mindanao. The largest numbers of eagles reside on Mindanao, with between 82 and 233 breeding pairs.very hard 21% IndonesiaIndonesia21%PhilippinesPhilippines21%New GuineaNew Guinea37%Amazon rainforestAmazon rainforest19%Created by: Ninjai. Statistics based on 192 answers in 3 languages »ornitology riddles » Purring is characteristic for...For small cats. Big cats (Pantherinae) can not purr, but are able to roar. For small cats (Felinae), apart from domestic cats, there are also Felis cats, such as European wild cat.very hard 21% all from the cat familyall from the cat family63%for big cats like lions, tigersfor big cats like lions, tigers2%for small catsfor small cats21%only for domestic catsonly for domestic cats12%Created by: Tschuka . Statistics based on 332 answers in 3 languages »cats riddles » What chemical element gives the blood of a lobster and octopus a bluish tint?Copper. Lobsters,octopus, snails, spiders and other creepy-crawlies have blood that uses copper for oxygen transport. This is called Hemocyanin. Oxygenation causes a color change between the colorless Cu deoxygenated form and the blue Cu oxygenated form. Vertebrates like humans , have iron based blood.very hard 23% CobaltCobalt47%ManganeseManganese20%CopperCopper23%molybdenummolybdenum8%Created by: Tschuka . Statistics based on 112 answers in 2 languages »blood riddles » How many fingers do cats have?18. Cats have 5 fingers in the front legs and 4 in the rear legs.very hard 24% 202032%181824%161636%22226%Created by: Tschuka . Statistics based on 1545 answers in 2 languages »animals riddles » Who was the first to create a zoo and botanical garden for scientific study?Aristotle. Throughout his conquests of Asia, Alexander the Great collected many plant and animal specimens for Aristotle’s research. This allowed Aristotle to develop in Athens the first zoo and botanical garden in existence.very hard 26% AristotleAristotle26%GalileoGalileo11%Carl LinnaeusCarl Linnaeus32%Charles DarwinCharles Darwin29%Created by: globalquiz.org. Statistics based on 4746 answers in 4 languages »ancient Greece riddles » What is the main feeding behaviour of hyenas?Hunting. Hyenas have long been regarded as being cowardly scavengers. Today they are known for killing as much as 95% of the animals they eat, and for driving off leopards or lionesses from their kills.very hard 26% scavengingscavenging70%huntinghunting26%cannibalismcannibalism1%none of the abovenone of the above1%Created by: ex-terminator. Statistics based on 4958 answers in 5 languages »animals of Africa riddles » Which mammal has more than seven cervical vertebrae (neck bones)?Sloth. Almost all mammals have seven neck bones, including giraffes with long necks and whales with short necks. The few exceptions include manatees and two-toed sloths, which each have only six cervical vertebrae, and three-toed sloths with nine cervical vertebraevery hard 26% giraffegiraffe31%mangustamangusta9%slothsloth26%nonenone32%Created by: globalquiz.org. Statistics based on 3609 answers in 2 languages »sloths riddles » Play zoology quiz and see all the questions.