It would be very hard especially since they are kind of hard to find. But it would also be hard because their genitalia, like lizards, is hidden up in their bodies.
There were both male and female dinosaurs.
A MALE BECAUSE A DARN THIS CAPSLOCK IS ON AND NOW as i was saying a male is way bigger and eats alot more
The male bichir has a broader penus fin than the female. The females are mainly larger in size than the males.
It depends what dinosaur and if the female was defending her nest etc, etc.
It all depends on the what dinosaur it is, for some the males have big colourful crust and big spines on the back to impress females, others it's as simple as the male is larger.
Generally, female dinosaur eels are more aggressive than males. Males have larger anal fins and can be slightly larger than females.
A male.
because the male will try and get on the female
if it is a female it will be sitting if it is a male it will be jumping
You cannot tell weather a caterpillar is male or female.
Worms are hermaphrodites. They are both male and female.
Snails are not male, nor female. They are hermaphrodites.