The developing embryos are sustained by a yolk sac until they are 12 cm (4.7 in) long, after which they are oophagous and feed on egg capsules produced by the mother. Each capsule measures about 55 mm (2.2 in) long and 12 mm (0.5 in) across, and contains 20–30 ova. Early-stage embryos have specialized teeth for opening the capsules, while later-stage embryos have their teeth hidden and swallow the capsules whole, their teeth not becoming functional again until just after birth.
During embryonic development, developing embryos are initially nourished by a yolk sac until they reach a length of 12 cm (4.7 in). After this point, they transition to an ovoviviparous state and consume egg capsules produced by the mother. Each capsule measures approximately 55 mm (2.2 in) long and 12 mm (0.5 in) wide, containing 20–30 ova. Early-stage embryos possess specialized teeth for opening the capsules, while later-stage embryos swallow the capsules whole, with their teeth becoming functional again only after birth.