How many letters does the top answer for “the pursuit (of a person or animal) by following tracks or marks they left behind” have?

The most common answer is tracking (8 letters).

Crossword clue: the pursuit (of a person or animal) by following tracks or marks they left behind

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

tracking 8 letters wn-def

the pursuit (of a person or animal) by following tracks or marks they left behind

trailing 8 letters wn-def

the pursuit (of a person or animal) by following tracks or marks they left behind