Least Concern Bird
Bald Eagle
The fish-hunting raptor and national bird of the United States
Read the guideAnimals that start with B
There are 16 animals that start with the letter B, including the Bald Eagle, Ball Python, Barn Owl, and more. See photos, facts, and full guides for each.
Least Concern 
Near Threatened Reptile
Ball Python
The gentle constrictor that curls into a ball
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Least Concern Bird
Barn Owl
The ghostly, heart-faced night hunter
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Least Concern Mammal
Bat
The only mammals capable of true flight
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Least Concern Reptile
Bearded Dragon
The friendly desert lizard and favorite pet reptile
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Vulnerable Fish
Betta Fish
The colorful fighter of Southeast Asian waters
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Least Concern Invertebrate
Black Widow Spider
The glossy black spider with the red hourglass
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Least Concern Invertebrate
Blue Crab
The swift swimming crab of Atlantic estuaries
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Least Concern Bird
Blue Jay
The bold, noisy blue songbird of North America
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Least Concern Fish
Blue Tang
The bright blue reef fish from Finding Nemo
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Endangered Mammal
Blue Whale
The largest animal that has ever lived
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Least Concern Reptile
Boa Constrictor
The powerful constricting snake of the Americas
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Least Concern Mammal
Bottlenose Dolphin
One of the ocean's most intelligent animals
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Least Concern Bird
Budgerigar
The little Australian parakeet and world's most popular pet bird
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Vulnerable Fish
Bull Shark
The shark that swims into freshwater
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Least Concern Insect
Bumblebee
The fuzzy, hard-working pollinator of meadows and gardens
Read the guideAnimals that start with B: FAQs
What animals start with the letter B?
Animals beginning with B include Bald Eagle, Ball Python, Barn Owl, Bat, Bearded Dragon, and 11 more.
How many animals begin with B?
Our guide currently covers 16 animals whose names start with B.