Definition: A domesticated animal from South America that is similar to a llama and is known for its soft, long wool.

Example: The farmer raised alpacas for their soft and luxurious wool.

Definition: This term describes young animals, especially birds, that are born in a very undeveloped state and need a lot of care and feeding from their parents after they are born.

Example: Altricial birds, such as robins, are born in a very immature state and depend on their parents for survival.

Definition: Relating to the belly or intestines.

Example: The alvine secretions are essential for digestion.

Definition: A small songbird from India, known for its bright colors and often kept as a pet or for fighting.

Example: The amadavat is known for its vibrant colors and melodious song.

Definition: A type of freshwater fish found only in North America, known for its unique appearance and often referred to by different names in various regions, such as bowfin or mudfish.

Example: The amia is known for its unique appearance and is often found in North American waters.

Definition: A type of fish that is a larval form of certain lampreys, known for its elongated body and burrowing habits in sandy riverbeds.

Example: The ammocete lives in freshwater environments and feeds on organic debris.

Definition: An amniote is a type of vertebrate animal that develops inside a protective membrane called an amnion. This group includes reptiles, birds, and mammals.

Example: Amniotes are distinguished from other vertebrates by their ability to lay eggs on land or retain the fertilized egg within the mother.

Definition: Related to a class of animals that can live both on land and in water, such as frogs and salamanders.

Example: The amphibian species can thrive in both aquatic and terrestrial environments.

Definition: A type of cold-blooded animal that can live both in water and on land, like frogs and salamanders. They usually start their life in water as larvae and later develop lungs to breathe air.

Example: The frog is an amphibian that can jump on land and swim in water.

Definition: Able to live or operate both on land and in water.

Example: The amphibious vehicle can travel on roads and float on water.

Definition: A small, fish-like marine animal that belongs to the genus of lancelets, known for its simple body structure and role in the study of vertebrate evolution.

Example: The amphioxus is often studied by scientists to understand the early stages of vertebrate development.