This might help your question tarantulas.co.za/forum/know-your-tarantu...ll-the-stages-of-a-t

haha, that is a question that depends on what type of spider it is.

I PERSONALLY feel when a sling get its full colouring, it becomes a juvies( excluding dwarfs)
a juvie is between 4-8cm, a sub adult is between 8 and 10cm( very fine line). BUT, an adult
i say that, a female tarantula only has to be 50% its fully grown size to breed. So if you have a
species that reaches a max of 20cm, you will be able to breed your female if she is 10

Thank you Dimitri and Dave

:thumbsup: :thumbsup: :thumbsup: :thumbsup:

Thats the video i was talking about, Dam male ate the female Regalis welcome