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Tortoise do not sit on their eggs (they are not warm blooded so they can not warm them), they bury them in a nest made in a warm moist place and they hatch naturally.
Bullfrogs prefer to live near water. And in warm climates.
The male and the female both take turns keeping the eggs warm.
One view: It actually depends on the age of the embryo in the egg. An older embryo will warm the egg and the egg will stay warm longer. If you feel of the eggs and they are losing warmth, she has probably abandoned her nest. She knows the age of the chick and how long the eggs can be without her.
They sit on top of them to keep them warm until they hatch. Every once in a while, many chickens will turn them over so that all sides on all the eggs will stay warm.
Well it totally depends on how long the eggs have been out of the mother. Most likely they can. I mean Sea turtles lay their eggs and then leave their kids and 1 out of 10 they ever meet them again. And 1 out of 100 even realize that, that is their kid. But totally if you keep the eggs warm they should hatch.
An eagles eggs must be kept warm by either the mom or dad. If an egg is not kept warm it could harm the baby inside and could cause the baby to die. That is why the female and male bird take turns sitting on the eggs
How long it takes a car heater to warm up depends on the temperature outside. In cold weather the heater can take several minutes to warm up.
Penguins have a lot of fur to keep them warm but to protect their eggs over the long winter, males have to huddle together. All the body heat coming together helps the eggs stay warm.
Stick insect eggs take about six to nine months to hatch, possibly a little earlier if kept in a warm room. If the insect is well fed, kept clean and exercised regularly, it can live for as long as 1 year, 2 months and 14 days.
depensds how hot it is andwhat temperature you mean by warm.
they um keep the egg warm until the mama penguin returns from her long journey