Single egg is laid in mother's pouch and hatches in about 10 days. Most people can even name one or two examples of both of those types of animals. But not even mammals like marsupials. They do lay eggs that develop outside the body of the earthworm and hatches into young earthworms. But only a true animal lover will be able to get a perfect score on this quiz. Some sharks lay a eggs (oviparous), generally an odd shaped egg sack called a mermaid purse. So comparing the pain response of animals is tricky at best. Animals have distinct ways of giving birth. Animals are amazingly stoic, especially wild animals. The eggs must then be incubated, or kept warm, until the hatchlings are ready to emerge from the shell. Echidnas also lay eggs. The only mammals which lay eggs are the monotremes, which are the platypus and the echidna. Kangaroos, like all marsupials, give birth to live young. Most people know that some animals are born live and some animals hatch from eggs. But even if we could measure pain response it would depend on the mammal and bird in question. Hedgehogs do not lay eggs. According to the Bible, bats are birds. Which birds do not lay eggs? The reason that some animals lay eggs is because that is more beneficial to them than than it is to give birth to a live offspring. In fact, there are three distinct methods of reproduction, as described below: Oviparous: Most snakes (about 70% of them) are oviparous, which means they lay eggs. Tree-kangaroos must find places comfortable and well-adapted for breeding, as they only give birth to one joey per year. Kangaroos give live birth, then the baby climbs into the mother's pouch, an equivalent uterus, suckling from … Yes, they lay eggs inside a protective covering of the cocoons. Some species give birth to live young, while others lay eggs. A noticeable exception to this is the ovoviviparous Jackson’s chameleon which gives birth to live chameleons which have hatched inside her body. Some sharks retain the eggs internally, and give live birth, but otherwise don't give the eggs nutritional support (ovoviviparous). How many times do I have to answer this same questions? These spines are used as a defensive mechanism. Do Earthworms give birth to young ones? Hard to say. Depending on the species, babies can come from the male or female, and the process of laying and hatching eggs varies widely. So, Do Earthworms lay eggs? They are full mammals who have live births. POSTED 13 May 2017 Photos viewable with last post Here are 4 photos of Tammar Wallaby embryos. Hedgehogs are mammals. At least 14 known subspecies of tree-kangaroo are living in Papua New Guinea and Australia. Tree-kangaroos have adapted better to regions of high altitudes. Trust me, these animals are … The baby echidna lives in her mother's pouch until she begins to develop spines. Now there is a hedgehog look-alike who lays eggs. 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