Top 10 animals factsAnimals quiz
How do baby birds get oxygen inside their eggs?
Oxygen comes in through pores in the shell. Directly under the shell, there is a small pocket of air. The microscopic pores on the egg surface allow the CO2 to escape and fresh air to get in, so a developing bird can breathe.
Which dogs are known to eat fish?
Dingos ancestors that were brought to Australia were relatively undomesticated and closer to wild Asian gray wolf. The dingo's diet includes bandicoots, rodents, echidnas, crabs, fruits, and other plants, as well as insects (mostly beetles). On Fraser Island, dignos often eat fish.
Mules are generally known to have fertility problem. How often do mules give birth to a healthy offspring?
Very rarely. Mules are considered infertile, but there have been more than 60 documented cases of foals born to female mules around the world (some of them were even DNA-tested to verify the motherhood). There are no recorded cases of fertile mule stallions.
Is this a male, or a female cat?
A female. This kind of coat coloring, which combines two colors other than white (black and red in this case), is known as tortoiseshell, and it is found almost exclusively in female cats. This is because the X chromosome determines the color of the cat, and there are no color genes in Y chromosome. Thus, female cats with XX chromosomes may be three colored (including white), while male cats with XY chromosomes cannot. (with the exception of very rare XXY sterile males).
These large insects occupy the same ecological niche in New Zealand, as rodents do elsewhere. What is it?
Weta are very large by insect standards, with body length up to 10cm (4 inches). Their physical appearance is like a katydid, long-horned grasshopper, or cricket, but the hind legs are enlarged and usually very spiny.
What is the color of eyes of owls that hunt at night?
Black. Owl's eye colour depends on the time of day in which they hunt. The ones that hunt during daylight have yellow eyes. The ones that hunt at night but also at the evenings and mornings have orange eyes. Black eyes are typical to owls that hunt only at night.
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. Beaver has the highest ratio of brain mass to body weight among rodents, which is reflected in the behaviour and the ability to act not only instinctively, but also logically.
Which mammal is venomous and dangerous to humans?
Platypus. The venom produced in the crural glands of the male platypus is not lethal to humans. However, it produces excruciating pain which does not respond even to morphine; sometimes the pain develops into a long-lasting hyperalgesia that can persist for months. Some biologists suggest that the venom may work directly on the brain's pain receptors. Other venomous mammals are small insectivores and vampire bats, which produce toxic saliva.
Why is this seahorse male so thick?
It is pregnant. Seahorse males deliver the babies. After mating, the fertilized eggs are embedded in the pouch wall and become surrounded by a spongy tissue. The male provides oxygen and supplies the eggs with prolactin, the same hormone responsible for milk production in pregnant mammals.
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 many as 95% of the animals they eat, and for driving off leopards or lionesses from their kills.