Mammals That Start With B: Complete A-to-Z List

B kicks off the names of dozens of mammal species and breeds covered on Animal Corner. From bison and blue whales in the wild to Beagles, Border Collies and Bichon Frises among domestic breeds, here’s a complete A-to-Z guide to mammals beginning with the letter B. We’ve grouped them by category: wild mammals first, then dog breeds, cat breeds and rabbit breeds.

Quick facts about mammals starting with B

Total entries: 66 mammals whose names start with B.
Wild mammal species: 5.
Dog breeds: 50.
Cat breeds: 8.
Rabbit breeds: 3.

Wild mammals starting with B

A-to-Z list of wild mammal species whose common names begin with this letter.

Bandicoots

Small marsupials with elongated snouts, native to Australia and New Guinea.

Bison

North America’s largest land mammal and the official US national mammal.

Black Rhinoceros

Critically endangered African rhino, known for its hooked prehensile lip.

Blue Whale

The largest animal ever to have lived, reaching 30 metres and 200 tonnes.

British Wild Cats

Native UK wildcat, now critically endangered in Scotland.

Dog breeds starting with B

Domestic dog breeds whose names begin with this letter.

Barbado da Terceira

Portuguese herding breed from the Azores; rugged and water-tolerant.

Barbet

Curly-coated French water dog used for retrieving waterfowl.

Basenji Dog

African hunting breed known as the ‘barkless dog’; yodels instead of barks.

Basset Bleu de Gascogne

Long-bodied French scent hound with a deep blue-mottled coat.

Basset Hound

Short-legged scent hound with one of the strongest noses in the dog world.

Beagador

Beagle and Labrador Retriever mix; friendly, energetic family dog.

Beagle

Compact scent hound; consistently among the most popular pet breeds in the US.

Beagle Mix Breeds

Roundup of popular Beagle hybrid breeds and what each is like.

Bearded Collie

Shaggy Scottish herding breed with an energetic, exuberant temperament.

Bedlington Terrier

Lamb-like silhouette with a tough, fearless terrier temperament beneath.

Belgian Malinois

Highly trainable Belgian shepherd, widely used in police and military work.

Berger Blanc Suisse

White Swiss Shepherd; gentle, intelligent, and family-friendly.

Berger Picard

Ancient French herding dog with a tousled rustic coat.

Bernedoodle

Bernese Mountain Dog and Poodle mix; loyal, calm and low-shedding.

Bernese Mountain Dog

Large tri-coloured Swiss farm dog with a famously calm temperament.

Bichon Frise

A dog breed; see the full Bichon Frise guide for breed history, traits and care.

Bichon Poodle Cross

Bichon Frise and Poodle hybrid; popular hypoallergenic toy mix.

Black German Shepherd

All-black German Shepherd variant; same working temperament as standard.

Black Mouth Cur

American working breed used for hunting and herding in the southern US.

Black Pomeranian

All-black variant of the popular Pomeranian toy breed.

Black Pug

Solid-black Pug variant with the same playful, snub-nosed temperament.

Black Russian Terrier

Large Russian guard dog bred from Giant Schnauzer and other working breeds.

Bloodhound

Famous scent hound; tracking ability admissible as evidence in US courts.

Blue Doberman Pinscher

Dilute-coat Doberman variant; rare, sometimes prone to coat issues.

Blue French Bulldog

French Bulldog with a slate-blue coat colour from the dilute gene.

Blue German Shepherd

German Shepherd with a rare dilute blue coat colour.

Blue Heeler

Australian Cattle Dog with a mottled blue coat; tireless working herder.

Blue Lacy

Texas-developed working breed and the official Texas state dog.

Blue Nose Pitbull Facts & Info

A dog breed; see the full Blue Nose Pitbull Facts & Info guide for breed history, traits and care.

Blue Tick Beagle

Beagle with a bluetick coat pattern; an uncommon variant.

Bluetick Coonhound

Tennessee state dog; large blue-mottled raccoon and bear hunter.

Boerboel

Powerful South African mastiff bred for guarding remote farmsteads.

Bolognese Dog

Small Italian companion dog with a fluffy white coat; calm and devoted.

Border Collie

Often ranked the world’s most intelligent dog; elite herding breed.

Border Collie Blue Heeler Mix

Working hybrid combining two of the top herding breeds.

Border Collie Corgi Mix

Energetic ‘Borgi’ herding-breed hybrid with shorter legs.

Border Collie Lab Mix

Borador; sociable, athletic and easy-to-train family dog.

Border Collie Mix Breeds

Roundup of popular Border Collie hybrid breeds.

Border Terrier

A dog breed; see the full Border Terrier guide for breed history, traits and care.

Bordoodle

Border Collie and Poodle mix; intelligent and low-shedding.

Borzoi Dog

Tall Russian sighthound; historically used to hunt wolves.

Boston Terrier

The ‘American Gentleman’; the first AKC-recognised US-developed breed.

Bouvier des Flandres

Belgian herding and cattle-driving breed with a tousled coat.

Boxador

Boxer and Labrador Retriever mix; energetic, family-friendly hybrid.

Boxer Dogs

Loyal, playful German breed with a strong protective instinct.

Brindle Pitbull

American Pitbull Terrier with the distinctive brindle striped coat.

Brittany Dog

French gun dog used for pointing and retrieving game birds.

Brussels Griffon

Small, big-personality Belgian companion breed with a distinctive beard.

Bull Mastiff

Massive English guardian breed bred from Bulldog and Mastiff stock.

Bull Terrier

Egg-shaped head and muscular build; tenacious English breed.

Cat breeds starting with B

Domestic cat breeds whose names begin with this letter.

Balinese

Long-haired Siamese-relative with the same striking blue eyes; vocal and affectionate.

Bengal Cats

Striking spotted domestic cat developed from Asian leopard cat hybrids.

Birman

Sacred Cat of Burma; long-haired, with distinctive white-gloved feet.

Bombay

All-black short-haired domestic cat bred to resemble a miniature black panther.

British Longhair

Long-haired sister breed to the British Shorthair; calm and dignified.

British Shorthair

Round-faced, dense-coated British cat; the iconic blue ‘British Blue’.

Burmese

Compact short-haired domestic cat; affectionate, playful and people-oriented.

Burmilla

Burmese-Chinchilla cross domestic cat with a striking silver-tipped coat.

Rabbit breeds starting with B

Domestic rabbit breeds whose names begin with this letter.

Belgian Hare Rabbits

Long-bodied domestic rabbit selectively bred to resemble a wild hare.

Beveren Rabbit

Large Belgian rabbit breed; one of the oldest fancy rabbit breeds.

Blanc De Hotot Rabbit

White rabbit breed with distinctive black eye-ring markings.

Frequently asked questions

How many mammals start with the letter B?

Animal Corner covers 66 mammals whose names begin with the letter B, including 5 wild mammal species, 50 dog breeds, 8 cat breeds and 3 rabbit breeds. Use the lists above to browse each category.

What is the most famous mammal that starts with B?

The standout wild mammal name starting with B is the bison. Among domestic breeds, popular B-starting names include the Beagle and Bernese Mountain Dog.

Are dogs, cats and rabbits considered mammals?

Yes. All dogs, cats and rabbits are mammals, alongside wild species like deer, elephants and whales. Mammals are warm-blooded vertebrates that nurse their young; this includes both wild species and the domesticated breeds derived from them.

What’s the smallest mammal whose name starts with B?

That depends on the letter, but on this page some of the smaller B-starting mammals include rabbit breeds and toy dog breeds. For wild species, see the species guides linked above.

How can I find more mammals on Animal Corner?

Browse the Animal Corner mammals hub at /mammal/ for the complete A-to-Z list, or use our individual breed pages: /dog-breeds/, /cat-breeds/ and /rabbit-breeds/.

Browse more: mammals hub, dog breeds, cat breeds, rabbit breeds.

Mammals That Start With B