Base for pet feeder and pet feeder

A base for pet feeder, comprising:

• a main body portion;
• and
• a plurality of adjusting mechanisms;
• wherein the main body portion comprises a first side and a second side, the second side is disposed opposite to the first side, and the first side is configured to contain food or water;
• the plurality of the adjusting mechanisms are disposed at the second side of the main body portion at intervals, each of the plurality of the adjusting mechanisms is capable of providing at least three heights;
• each of the plurality of the adjusting mechanisms comprises a first supporting plate and a second supporting plate;
• the first supporting plate comprises a first part and a second part, the first part is rotatably connected to the second side, so as to fold or unfold the first supporting plate with respect to the second side;
• the second supporting plate is movably connected to the second part, and the second supporting plate is capable of being at different heights with respect to the first supporting plate;
• the second supporting plate is rotatably connected to the second part, so as to fold or unfold the second supporting plate with respect to the first supporting plate.