The most common species are: the African Spurred tortoise (Geochelone Sulcata), the spotted turtle (Clemmys guttata), the wood tortoise (Clemmys insculpta), the green turtle(Chelonia) the Blunding?s turtle ( Emydoidea Blundigii), Trachemys s. elegance (red-eared slider) along with the diamondback terrapin (Malaklemys terrapin). A safer alternative is Bio-Identical Hormone Replacement Therapy (BHRT) which is derived from plants but treated to become identical to the body?s natural hormones. Since each individual is unique, BHRT doses can be customized to correspond exactly.