How do different groups of animals reproduce?

Answer 1

Different groups of animals reproduce through various methods adapted to their environments and lifestyles. For instance, mammals typically give live birth after internal fertilization, while birds lay eggs that develop outside the body. Reptiles may also lay eggs, but some give live birth, and many aquatic animals like fish and amphibians engage in external fertilization, releasing eggs and sperm into the water. Invertebrates exhibit diverse reproductive strategies, including budding, fragmentation, and both sexual and asexual reproduction.