internally because they need time to hatch them
Sloths fertilize the opposite sex internally. Mating occurs when a male sloth climbs to the female's territory, and after courtship behaviors, the male will mate with the female. The fertilization process takes place inside the female's body, leading to the development of the young sloth.
Internal fertilization and external fertilization. Internal fertilisation means fertilize the egg inside the female's body. External fertilization is fertilize the egg after the female had lay it out. All mammals including platypus and spiny anteater do internal fertilization.
An egg carried internally
They fertilize internally! Many animals reproduce through internal fertilization. A male and female pair up and mate, and the female's eggs are fertilized inside her body. Empid flies mate in this way. The male empid fly is smaller than the female and risks being eaten during mating. To protect himself, he presents the female with a small insect to distract her. More information can be found at the following web address: http://www.infoplease.com/dk/science/encyclopedia/reproduction.html#ESCI309FERTIL
Actually,the chicken,dog,cat,turtle,and the mosquito fertilize internally.
internally
Fish and amphibians are two groups of animals that typically fertilize externally. They release their eggs and sperm into the water to fertilize externally rather than internally.
There are a great number of characteristics that animals posses that can help them reproduce. The ability to fertilize internally is one of them.
All reptiles fertilize internally
internally because they need time to hatch them
Koalas do not fertilize their young. They fertilize each other (internally) to produce young.
yes
Guppies are fertilised internally they are livebearers.
internal
A deer is a mammal, so reproduction is done internally.
Amphibians fertilize their eggs externally.