No
inside
Yes.
Outside the mother, and inside an egg.
Ovoviviparous animals develop eggs but their young develop and "hatch" inside of their mother, so that the mother delivers live young.
When an amphibian is a larva, it will have gills. As it matures into the adult stage, it will develop lungs.
No, the majority of animal embryos develop outside the mother's body. This includes animals such as birds, reptiles, and most fish. Embryos that develop inside the mother's body are found in live-bearing mammals as well as some fish and sharks.
Most embryos of mammals develop inside the mother's uterus, attaching to the uterine wall where they receive nutrients and oxygen through the mother's blood supply. This allows for protection and support during development until the offspring is ready for birth.
Yes, they developing tadpoles are inside fertilizedeggs.
Amphibian skeletons are made of bone and cartilage.
Babies develop inside their mother's uterus. When time comes for them to be born, they come out her vagina.
Dogs don't 'hatch' ! They are born. They develop within the mother dog's uterus (just as a human baby would inside its mother !).
No, if the mother is in premature labor, she is given the medication and it goes to the baby to help develop his or her lungs.