Torture testing the A7r3's tracking system. After all, every torture test needs a baseline which is almost impossible to miss...
Aldabran giant tortoise. Native to Aldabra, an atoll in the Seychelles, these are second only to the Galapagos giant tortoise in size.
A7r3 with 100-400 GM and 1.4x TC. First image at 560mm, second at 531mm. Both at f/8, 1/500s, ISO 600.