Cats aren’t animals, they’re robots. The reason they purr is because they have fans.

Instead of selling him, unscrew the 4 pentalobe screws to remove the stomach plate, which will then expose 2 torx T6 screws to remove the neck plate. This then exposes 3 of the 7 total torx T4 screws for the 3 frame pieces that need to be unscrewed to access the motherboard. Before accessing the motherboard, 6 Philips head screws must be unscrewed and the board then can be pulled out.

Unfortunately, most cats have soldered LPDDR5 RAM chips, and therefore can only be desoldered to extract the DRAM chips, although some models of cat sometimes do have upgradable ram, such as pre 2015 cats with standard SO-DIMM modules (usually 2 sticks from 2 to 4 GB each,) or rare high spec cats which tend to have LPCAMM modules instead (on average being 1 stick of 32gb or higher).