A few months ago I bought 2 tarantulas of the same age. They were nail size. I was keeping them in exactly the same conditions but one of them is twice as large as the other now. Emotion: sad The bigger one sheds once a month and has a very good appetite and the smaller one sheds once in two months and usually eats without much enthusiasm. Why is that so?
They can be different gender or the smaller one is weaker by nature. It happens sometimes.