How many letters does the top answer for “(of certain animals) feeding on dead or decaying animal matter” have?

The most common answer is saprophagous (12 letters).

Crossword clue: (of certain animals) feeding on dead or decaying animal matter

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

saprophagous 12 letters wn-def

(of certain animals) feeding on dead or decaying animal matter

saprozoic 9 letters wn-def

(of certain animals) feeding on dead or decaying animal matter