Table 3.

Oral dimensions, bit size and bit fit of mares and geldings of different horse and pony breeds ≥ 5 years.

Oral dimensions	N	Minimum (mm)	Maximum (mm)	Mean (mm)	Standard deviation
Mouth width	554	95	165	131.3	10.3
Distance between upper and lower jaw	554	20	46	28.9	3.9
Lower jaw width	508	15	45	29.5	3.9
Tongue thickness	79	9	22	15.8	2.5
Bit measurements
Bit length	422	100	160	135.2	10.7
Bit thickness	419	10	25	15.1	2.9
Bit center link length	220	20	65	35.6	7.3
Bit fit
Bit space	79	5	22	14.0	3.2
Tongue space	419	0	36	13.7	4.7
Bit length fit	422	−20	30	3.6	7.2
Bit thickness fit	43	−9	12	0.3	3.5
Bit center link length fit	215	−15	40	5.9	8.5