On average, pigs live for about 15 years. Sharks apparently are the only animals that never get sick. They are immune to every type of disease including cancer. A chameleon’s tongue is twice the length of its body. Male seahorses produce offspring. ...
Though rhinos are often solitary, they do occasionally form groups. Called crashes, these groups are made up of a female and her offspring. A dominant male rules over an area of land. The male will allow some sub-dominate males to live on his territory. Females roam freely around several ...
Since there are 6 to 20 pups in a litter, your unwanted guests can have around 200 offspring a year. It is estimated that there is one wild black rat for every human being on this planet!Carriers of disease Wild rats carry disease-causing pathogens(病原体) to which humans and pets are...
Tapirs have a relatively long gestation period of 13 months and only give birth to one baby at a time, according to theInternational Union for Conservation of Nature (IUCN) Species Survival Commission. The offspring, called calves, can stand a couple hours after birth and weigh 15 to 22 lbs...
while female rats remain peaceful. But female offspring of rats previously exposed to the pesticide "became aggressive and started to bite each other, in some cases until one died." said Yoichiro Kuroda, principle investigator of the study, adding, "That report sent a chill through me." Glufos...
They first appeared in Egypt and Mesopotamia about 3000 years ago. The donkey or ass has been domesticated and used as a working or pack animal. The male donkey is called a jack and the female is called a jenny. If a jenny is mated with a stallion horse, the offspring is called a ...
Sperm, male reproductive cell, produced by most animals. In higher vertebrates, especially mammals, sperm are produced in the testes. The sperm unites with (fertilizes) the ovum (egg) of a female to produce a new offspring. Mature sperm have two distingu
human reproductive system,organsystem by whichhumansreproduceand bear liveoffspring. Provided allorgansare present, normally constructed, and functioning properly, the essential features of humanreproductionare (1) liberation of anovum, oregg, at a specific time in the reproductive cycle, (2) internal...
during the day. For example, sea turtles go to their breeding sites in order to keep themselves safe and protect their offspring. Most nocturnal animals live in the desert. So, not only are they trying to stay away from predators, they're also staying out of the hot sun during the day...
The White Baby Gorilla's Offspring Lesson Summary Frequently Asked Questions Why was Snowflake the gorilla white? Snowflake was the only albino gorilla to ever have been. Albinism is the nondominant trait that results in the lack of pigment to in the skin and hair cells. This leaves the ani...