Table 2.

Dog size groups.

Size group	Adult bodyweight*	Number of breeds in size group
Toy	< 5.5 kg	19
Small	≥5.5 to < 11 kg	94
Medium	≥11 to < 26 kg	215
Large	≥26 to < 45 kg	154
Giant	≥45 kg	26
Mixed breed	All adult bodyweights	1 (mixed breed)

^*Adult bodyweight was taken to be the bodyweight at 2–5 years of age.