Treasure Island S01 E23 The High‑Flying Fellow! Puppy the Seagull

Puppy, along with Silver, is taken captive by Captain Smollett's party. Silver insists he alone can solve the riddle of the clue on the treasure map, and so agrees to help with the search. But then Silver comes down with a fever — and Puppy declares he'll go fetch a medicinal herb that cures it, for Silver's sake!