The most rushed breeding species in the animal world

Many animals have the ability to conceive and give birth to maintain the breed only a short time after birth.

Aphid (aphid) is a small insect found throughout the world.A female bug that has just born has eggs inside the body, so they are basically born pregnant.Aphids reproduce in asexual form, create miniature copies of themselves, Ed Spevak, manager of invertebrates at St. Zoo.Louis, USA, said.According to National Geographic, bed bugs also use sexual reproduction when their habitats have frequent changing weather.This ensures that the offspring is genetically diverse, has a healthier and more resilient vitality.(Photo: Wikimedia).

Axolotl, or Mexican walking fish (Ambystoma mexicanum) , is a native salamander of Mexico's reptile class.They do not undergo frog-like transformation but retain their physical characteristics from larval stage to adulthood.Instead of developing the lungs and moving upwards, mature individuals still live in the water and have gills.Axolotl is fertile within six months to a year after birth.(Photo: National Geographic).

Some animals reach sexual maturity based on body size instead of age, says Rebecca Bearman, an expert working at Atlanta Zoo, USA. This phenomenon occurs in Cabrera's hutia , rodents living in Cuba.They are fertile when the female weighs about 0.34kg, with the male being 0.3kg.(Photo: PicQuery).

Lagidium viscacia , native rodent living in the western part of South America, looks like a long-tailed rabbit.They are sexually mature after about 7 months of birth but only live 2-3 years.This is like a human being capable of reproducing after 30 years of age.(Photo: Wikimedia).

The African Hornbill, also known as the Addax antelope, lives on a small scale of the Sahara desert, is fertile at 10 months of age.However, males predominate in establishing territories, preventing younger males from mating until they are about three years old or older.(Photo: Wikimedia).

Cottontail rabbit lives in fertile North America from two months old, said Steve Lukefahr, a biologist at Texas A&M University in the US.Their gestation period is quite short, within a month.(Photo: Flickr).

Many insects have a long growing period, but adult life is quite short. For example, moths of cecropia live in North America in two months as larvae but live less than 10 days as adults.Adult butterflies do not eat or drink because there is no complete digestive system.The only thing they have to do is find a mate to reproduce.(Photo: National Geographic).