Caterpillars don't have a sex, they are the sexless larva of insects (although there might be a clue in their DNA - but that would require lab analysis).
But wait: Caterpillars will turn into butterflies, right? Well, just wait until they do, and look for DARK lines around the wings with many white dots (girl) or light lines with little white dots (boy).
the male slowworm is darker then the female. the female is brighter underneth then the male sloworm.
male and female
Feeder fish, How do you tell male from female of the?
How do you tell a male pacific frog from a female
Both male and female emus have blue on their necks. It is impossible to tell the male and female apart by appearance alone.
You can tell if a dog is male or female by looking at their genitals. Male dogs have a penis and testicles, while female dogs have a vulva.
You can tell a male angel fish from a female one by all the colorful stripes it has. [the male one]
Because the male has a mane and the female does not have a mane.
When they are fully feathered, the male will have feathers that curl on his tail and the female doesnt. This is how you tell if they are male or female without handling them
When they are fully feathered, the male will have feathers that curl on his tail and the female doesnt. This is how you tell if they are male or female without handling them
A snail is both female and male. They are hermaphrodites.
Male betta's are more colorful then female's