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Table 2 Number of dogs of each breed included in the brachycephalic dog group

From: Comparison of the endocranial- and brain volumes in brachycephalic dogs, mesaticephalic dogs and Cavalier King Charles spaniels in relation to their body weight

Brachycephalic dog breeds

Body weight

Pug (nā€‰=ā€‰5)

6.2-9 kg

Boston terrier (nā€‰=ā€‰4)

9 -14 kg

English bulldog (nā€‰=ā€‰3)

15-25 kg

French bulldog (nā€‰=ā€‰4)

9-12 kg

Pekingese (nā€‰=ā€‰3)

3-5 kg

Maltese (nā€‰=ā€‰3)

3-4.8 kg

Bolonka Zwetna (nā€‰=ā€‰2)

2.2kg; 3 kg

Papillon (nā€‰=ā€‰2)

2.5 kg; 2.8 kg

Yorkshire terrier (nā€‰=ā€‰4)

1.8-2.9 kg

Shih Tzu (nā€‰=ā€‰3)

7.5-8.2 kg

Chihuahua (nā€‰=ā€‰2)

2.4 kg; 3 kg