Zoo officials say the Texas cooter, named Thelma and Louise for the female duo in the 1991 Oscar-winning movie, has been doing well.
Spokeswoman Debbie Rios-Vanskike says the turtle eats and swims, and added that the two heads - named Louise Left and Thelma Right - get along.
The Facebook page on Sunday showed photos of the quirky reptile and imaginary conversations between the two heads.
The turtle hatched June 18. The animal is on display at the zoo's Friedrich Aquarium.