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Message: <blockquote data-quote="m0lsx" data-source="post: 185945" data-attributes="member: 29323">My understanding is that a Male GBB's life span is around 4 - 5 years & females normally matures older than males. So it sounds like you may, possibly,  have a female & that her growth rate is about right for maturing at  between 5 & 7 years.Personally I always feel positive if one of my slings grows reasonably slowly. It is not a guarantee,  as Rs50matt points out with his 2 females. But the quicker a sling grows, the more possibility there is, that it will be male. For example, I have 2 Homoeomma chilensis that I brought from a show last year, one is about 30% bigger than the other. Thus the possibility is, I have a male & a female.</blockquote>