It would not work because
1. memes will take up to much space
2. Won't work well because you don't have a mouse
3. Battery would die fassstttt
4. Too much ram being used
5. Would slow down the performance
6. Screen is too small
There are already apps like this one for Android, search, aneko, shimeji, virtual pet buddy to name a few so, it is possible, maybe not with all the features of the desktop version, but still.
Also, do you know? Android doesn't have RAM since it's an OS (software) the device itself is the one with the RAM ( hardware) and it varies from device to device :)