usally girl shih tzu may look bigger tha boy shih tzu but there not it's just there hair that makes them look big
the girl is bigger
The girl can run faster than the boy and the boy are bigger than the girl. You can also spot the different by poking them, then the one that bite is the female.
Boys are bigger than Girls in general.
the boys are bigger than the girls
He is a boy for if you notice that his legs are bigger than a womans could be.
i think its ears bigger than girl ears
A male tiger is usually bigger than a female tiger.
Boy hamsters are MUCH bigger and meaner than girl hamsters so I got the girl!
usaully the girl lizards are bigger than the boy.
go to this website http://www.huggablepets.com/huggablepets/sexing.shtml
Sometimes, depends on age and size...
Not necessarily, it really depends on their ages. Males are usually bigger then females.