sentence: Small tadpoles hatch out after two to three weeks.
sentences_before: The strings of eggs absorb water and swell in size.
sentences_after: At first they hold onto the remains of the strings and feed on the jelly. They later attach themselves to the underside of the leaves of water weed before becoming free swimming. They are a darker colour, being blackish above and dark grey below. They can be told apart from the tadpoles of other species by the fact that the mouth is the same width as the space between the eyes, and this is twice as large as the distance between the nostrils. Over a few weeks their legs develop and their tail slowly gets reabsorbed.
concept_name: small tadpole
headings: Common toad Behaviour Reproduction
categories: Toads