Species	bodywt	brainwt
afele	6654.00	5712.00
cow	465.00	423.00
donkey	187.00	419.00
man	62.00	1320.00
graywolf	36.33	119.50
redfox	4.24	NA
narmadillo	3.50	10.80
echidna	3.00	25.00
phalanger	1.62	11.40
guineapig	1.04	5.50
eurhedghog	0.79	3.50
chinchilla	0.43	64.00
ghamster	0.12	1.00
snmole	0.06	1.00
lbbat	0.01	0.25