Table 1. The number of whiskers and specimens used in this study.

Species	# of individuals	# of whiskers	Sex and age
Rat	4	225	All female, 5~36 months old
Mouse	7	323	All male, 6~8 weeks
Gerbil	2	172	2 female, 3 months old
Chinchilla	2	95	Unknown
Ground squirrel	3	116	Mixed sex, adult
Rabbit	2	126	Female, 10 months
Cat	6	228	Female, 11 months
Harbor seal	6	306	2 male, 4 female, all >1yr old
Sea lion	2	148	Female, subadult and 5+ years old
Pig	1	23	Female, age unknown