The Brazilian Black Tarantula Grammostola pulchra is a very popular breed with collectors, partially due to its docile and placid temper, but also due to its velvety black colour. The spiderlings are actually born brown, but gradually darken every time they moult and grow. They are darkest immediately after moulting.
They prefer to burrow and hide if threatened, and have been observed rapidly digging and hiding when disturbed in the wild.
They can look very impressive when fully grown, often reaching up to 15 centimetres in size!