This level asks you to save 8 pets in 50 moves, it also has bombs and line blasters, that are timed to go off after 0 moves, once they are released from their metal cages!
Time the release of the bombs and line basters carefully to put them to maximum use.
Bringing them down to the bottom row is good way to do this as it clears a large area and helps drop the pets more quickly.
Use the paint brushes you earn within the game to help position the bombs and line blasters and to gain more points by joining up large groups of the same color, and creating x2 blocks.