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Hopefully you will find some inspiration in this collection of names beginning with the letter B
| Babe | Bluegrass |
| Baby | Blues |
| Baby Kitty | Bluesy |
| Baby Rose | Bluey |
| Baby Ruth | Blunderbuss |
| Backer | Blur |
| Bacon | Blush |
| Bad Cat | Bo |
| Bad Kitty | Bo Jangles |
| Bag of Bones | Bobbi |
| Baggins | Bobbin |
| Bailey | Bobby |
| Baker | Bobcat |
| Balboa | Bobo |
| Balky | Bobs |
| Bam-Bam | Bobtail |
| Bambi | Boca |
| Banana Nut | Bodie |
| Bangles | Boggle |
| Bango | Bogie |
| Banjo | Bombay |
| Barbie | Bomber |
| Barbie Doll | Boneheart |
| Barbwire | Bonkers |
| Barnaby | Bonnet |
| Barncat | Bonnie |
| Barney | Bonnie Blue |
| Bart | Boo-Boo |
| Bartimaeus | Booger |
| Bashful | Boogey Man |
| Basil | Boogie |
| Bathsheba | Boomer |
| Battleship | Boondock |
| Bavaria | Boots |
| Bay | Bootsie |
| Baybaby | Boris |
| Bayberry | Bosley |
| Bean | Boss Cat |
| Beano | Bossy |
| Bear | Boston Blackie |
| Bearcat | Bottle Neck |
| Beardsley | Bouqet |
| Beasley | Bowie |
| Beatrix | Bowtie |
| Beatty | Boxer |
| Beau | Bozo |
| Beau Geste | Brachs |
| Beau Thai | Brady |
| Beauty | Brahms |
| Becca | Brak |
| Becker | Brandy |
| Bee Gees | Brassy |
| Beetle Bailey | Brat Cat |
| Beggar | Bratsworth |
| Beggin | Bravecat |
| Bella | Braveheart |
| Bella Donna | Brawny |
| Belle | Brenda |
| Ben Hur | Brenda Lee |
| Benz | Bria |
| Bernie | Brianna |
| Bessie | Briar Patch |
| Bettina | Briciola |
| Betty Boop | Bridget |
| Bewitched | Bridie |
| Bianca | Brigadoon |
| Bibbee | Bright Eyes |
| Bicker | Brindle |
| Big Boy | Brisket |
| Bigeyes | Bronsen |
| Bigfoot | Bronzer |
| Biggin | Brown Nose |
| Bigglesworth | Brownie |
| Biggs | Bruiser |
| Bijou | Brusher |
| Bilbo | Brushpile |
| Billabong | Brute Cat |
| Billy Boy | Brutus |
| Billy Burger | Bryce |
| Bimbo | Bubba |
| Bingle | Bubbles |
| Bingo | Buck |
| Bingo Cat | Buckaroo |
| Binky | Buckeye |
| Birdie | Buckley |
| Biscuit | Bucky |
| Bistro | Budder |
| Bitch Kitty | Buddha |
| Bitsy | Buddy |
| Bitter | Buddy R. Boyer |
| Bitty | Buffette |
| Black | Buffy |
| Black ‘n Decker | Bug Juice |
| Black Beauty | Buggles |
| Black Betty | Bugle |
| Black Bones | Bugs |
| Black Cloud | Bugsley |
| Black Knight | Bulldog |
| Black Licorice | Bullet |
| Black Sabbath | Bullfrog |
| Black Top | Bullseye |
| Black Widow | Bumblebee |
| Blackbeard | Bump |
| Blackberry | Bumper |
| Blackeyed Pea | Bumper Sticker |
| Blackheart | Bungie |
| Blackie | Bungle Boy |
| Blackjack | Bunkie Bunk |
| Blacky | Bunky |
| Blanco | Buoy |
| Blanket Baby | Burberry |
| Blanks | Burnt Orange |
| Blarney | Burry |
| Blaster | Bursar |
| Blazes | Bushy Tail |
| Blazing Heart | Buster |
| Blenken | Butch |
| Blenko | Butch Cassidy |
| Blinker | Butt Ugly |
| Blister | Butter |
| Blitz | Butter Bill |
| Blitzen | Butterbean |
| Blizz | Butterboy |
| Blondie | Buttercup |
| Bloomers | Butterfinger |
| Blooper | Buttermilk |
| Blossom | Butterscotch |
| Blue | Buttery |
| Blue Eyes | Buttons |
| Bluebell | Bye Bye |
| Blueberry | Byte |