This is one of Lichess's puzzles, taken from a real game. Black is on the move.
[FEN "1r1q1rk1/5pbp/3pbnp1/1p1Np1B1/1p1nP3/P1N2P2/2P1B1PP/R2Q1RK1 b - - 0 1"] 1... Nxe4 2. Bxd8
The suggested move is Nxe4. However, I don't see how Black gains an advantage after White plays Bxd8.
Correction: The suggested move is Nxd5