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Animals That Start With “B”

Browse 41 verified species whose common names begin with the letter B.

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MammaliaAnimal group

Baboon

Papio

Diet: Omnivore with plant foods forming most of the diet
Wild lifespan: Species-specific; adults may live 20–30 years

MammaliaNE

Bactrian Camel

Camelus bactrianus

Diet: Herbivore
Wild lifespan: Commonly 30–40 years with good care

ReptiliaLC

Baird's Rat Snake

Pantherophis bairdi

Diet: Constricting predator of small vertebrates
Wild lifespan: Wild lifespan is uncertain; managed rat snakes may live 15–20 years or more

AvesLC

Bald Eagle

Haliaeetus leucocephalus

Diet: Carnivore and opportunistic scavenger
Wild lifespan: Often 20–30 years in the wild

AvesLC

Barn Owl

Tyto alba

Diet: Carnivore
Wild lifespan: Often 4–8 years in the wild, with some much older

ReptiliaAnimal group

Basilisk Lizard

Basiliscus

Diet: Omnivore with a strong animal-food component
Wild lifespan: Species-specific; commonly several years, with longer records under managed care

ReptiliaLC

Bearded Dragon

Pogona vitticeps

Diet: Omnivore
Wild lifespan: Often 5–8 years in the wild and 10–15 years with excellent captive care

ReptiliaNE

Beauty Rat Snake

Elaphe taeniura

Diet: Active nonvenomous predator of small vertebrates
Wild lifespan: Often 12–18 years in managed care; wild lifespan is poorly documented

MammaliaEN

Bengal Tiger

Panthera tigris tigris

Diet: Carnivore
Wild lifespan: Often 10–15 years; survival varies

MammaliaLC

Bighorn Sheep

Ovis canadensis

Diet: Herbivore
Wild lifespan: Often 10–15 years for females; males commonly live fewer years

ReptiliaLC

Bird Snake

Thelotornis kirtlandii

Diet: Carnivore
Wild lifespan: Not reliably quantified

ReptiliaLC

Bismarck Ringed Python

Bothrochilus boa

Diet: Ground-level ambush predator of small vertebrates
Wild lifespan: Managed individuals may live 15–20 years; wild longevity is uncertain

ReptiliaLC

Black Caiman

Melanosuchus niger

Diet: Carnivore
Wild lifespan: Several decades; precise maximum in the wild is uncertain

ReptiliaLC

Black Mamba

Dendroaspis polylepis

Diet: Carnivore
Wild lifespan: Possibly 10–15 years in the wild

ReptiliaLC

Black Rat Snake

Pantherophis obsoletus

Diet: Carnivorous constrictor of small vertebrates
Wild lifespan: Often 10–15 years in the wild; managed individuals may exceed 20 years

ArachnidaAnimal group

Black Widow Spider

Latrodectus

Diet: Carnivore; mostly insects and other arthropods
Wild lifespan: No single genus-wide lifespan; females outlive males in studied species

ReptiliaLC

Black-Headed Python

Aspidites melanocephalus

Diet: Reptile-specialist constrictor
Wild lifespan: Often 20 years or more; managed animals may reach 20–30 years

ReptiliaNE

Black-Throated Monitor

Varanus albigularis microstictus

Diet: Opportunistic predator and scavenger
Wild lifespan: Often 15–20 years in managed care; wild longevity is uncertain

ActinopterygiiLC

Blackfin Tuna

Thunnus atlanticus

Diet: Carnivorous pelagic predator
Wild lifespan: Short to moderate for a tuna; precise maximum age is not well established in broad public references