Upgraded Automatic Cat Feeder, KATALIC Clog-Free 4L Cat Food Dispenser Sliding Lock Lid Storage Timed Feeder for Cat and Dogs with Voice Recorder, Programmable Meal & Portion

Q: Is the food tray metal or plastic?

It's a food-grade stainless steel bowl. Easy to clean and protect your pet from allergic reactions.

Q: I want to know how the lid of this container is locked? I am worried about my naughty dog....

It has a snap lock on both sides.

Q: Because my cat reagitates food, he is presently fed 5 grams per feeding; 18 times per day (every 1.5 hours) Does this feeder allow for that schedule?

I have the same problem with my cat. I returned this feeder for a low-tech rotating feeder. I found the "upgraded" feeder impossible to set fast, as required. The "help" email provided proved to be non-existent . It's supposed to provide settings of the kind you want, but it is difficult to achieve.