Table 3. Pearson’s correlations among daily values of body temperature and behavioral indices with ambient temperature before parturition.

	ST	VT	Motion index	Step count	Lying bouts	Standing duration
r	0.35 *	0.00	0.20 *	0.20 *	–0.02	0.08

ST: ventral tail base surface temperature; VT: vaginal tempearature. The results of statistical analyses in behavior indices are obtained using the values coverted by a natural logarithm (ln(x + 1)) for normalization. * P < 0.05.