Pet Rescue Level 122 Tips
In pet rescue level 122 use the balloon booster first. Use the rocket booster, you’ll activate, in a column in the right part of the screen. Then start clearing the blocks. Use the line blasters to destroy the lines with metal boxes, or smash the wires of the blocks in the right of the screen, where needed. But keep at least one line blaster for the last line of the level.
Pet Rescue Level 122 Walkhtrough Video
The video below will show an example of the strategy described above on how to beat #122: