Very little is known about the specific biology of the Peloponnese slow worm; however, it used to be considered as a subspecies of the slow worm (Anguis fragilis), and as such is thought to be very similar (3).
In general, slow worms spend much of their time underground (3) (5), and when above the surface they tend not to bask in open areas, instead favouring small pools of sunlight in vegetation. Thermoregulation occurs mainly through keeping the body in contact with warm surfaces. Loose or decaying vegetation provides a good burrowing substrate for the slow worm, and it uses underground refuges for hibernation (3).
Little is known about the diet of the Peloponnese slow worm, but like the related slow worm, it is thought to consist primarily of soft-bodied invertebrates including slugs, snails and earthworms (3) (4), although insects and spiders may also sometimes be eaten. Prey is detected using a combination of chemical and visual cues, and slow worms will inspect potential food by using repeated flicks of the tongue to pick up scent particles. Movement of the prey is usually necessary in order for slow worms to strike, after which they swallow the prey whole (3).
Being similar to the slow worm, the Peloponnese slow worm is not thought to be territorial, but courtship can be a rather violent affair. The male will take hold of the female by biting it on the head or neck. The bodies of the male and female become intertwined, and courtship can last for up to ten hours. Slow worms usually only breed once every two years, producing between 3 and 28 young (3) (4), with an average of about 12 (4). The young are born live (3) (4), although they are still encased in the egg membrane (3).
When attacked, the main defence strategy of the slow worm is to contract its tail muscles, which severs the tail from the rest of the body (3) (5). Once the tail has been shed, it can twitch violently for up to 15 minutes (3).
The slow worm will shed its skin at intervals throughout its life. Unlike snakes, the slow worm usually sheds in two or three sleeve-like sections which are often heavily folded (3).