I'm no expert, but I'm fairly sure that the environmental conditions (ie. air temp) makes quite a big difference
dog
Because internal fertilization requires a womb and placenta to protect and nourish the growing embryos - which limits the number of offspring the mother can produce. Laying eggs outside the body means the female can potentially produce many more off-spring, and thus vastly increase the chances of the species survival.
Fishes and most amphibians (frogs, toads, etc.)
Mostly water animals do external fertilization
The answer is this website SUCKS!
External fertilization occurs when the union of egg and sperm takes place outside the bodies of the individuals involved. It is common in aquatic animals such as fish and amphibians, where both gametes are released into the water for fertilization to occur. This type of fertilization is less reliable than internal fertilization as it is subject to environmental factors such as water currents and predation.
the daphnia species FOOL
Internal fertilization and external fertilizationinternal means When the fusion of the male and female gamete occurs within the female genital tract it is called internal fertilization. This type of fertilization occurs in all terrestrial animals both oviparous and viviparous. Reptiles, Birds and mammals show internal fertilization external fertilizationThe fusiri of the gametes occurs outside the body of the animal and is common in aquatic animals. In bony fishes, frogs, echinoderms the sperms and ova are released into the water and their union occurs by Chromosome number of few chance. Since fertilization occurs outside the body of the animal externally, this method is called external fertilization.
Jaguar is a mamal toh obviously it will have internal fertilisation...it directly gives birth to young ones
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.
Internal fertilization takes place inside the body of the female. It is necessary for animals which live on land (terrestrial animals) and is retained by aquatic animals descended form terrestrial ancestors eg whales and dolphins. External fertilization takes place outside the body of the female. It usually takes place in water, usually the environment in which the animal lives eg fish and amphibians. This is because eggs and sperm would dry out and die if they are not kept wet. Internal fertilization is more certain than external fertilization so fewer eggs need to be produced. After internal fertilization eggs can be protected and fed while developing inside the mother's body. After external fertilization the eggs are potentially exposed to predators and so must either be produced in very large numbers or protected by the parents or both.
One question before the real answer, why pandas? Anyways, the males in water release a cloud of sperm in mating grounds. If you want a better answer, check animal planet