How many letters does the top answer for “a larval frog or toad” have?

The most common answer is polliwog (8 letters).

Crossword clue: a larval frog or toad

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

polliwog 8 letters wn-def

a larval frog or toad

pollywog 8 letters wn-def

a larval frog or toad

tadpole 7 letters wn-def

a larval frog or toad

frogs, toads, tree toads 50% similar → batrachia, salientia

relating to frogs and toads 50% similar → anuran, batrachian, salientian