This mod adds a mystical creature - half human and half pig. It is referred to as Piggsy. You can find it on Mount Chiliad.
Installation:
wmyva2.dff (from the GTA3.img folder, in the archive) - using the GTA Img Tool, replace in android/data/com.rockstagames.gtasa/files/texdb/gta3.img
Pig_Bod_256.png and Pig_HedF1_128.png (from the GTA3.txt folder, in the archive) - using the TXD Tool, replace in android/data/com.rockstagames.gtasa/files/texdb/GTA3/GTA3.txt.
Piggsy.csa (from the CLEO folder, in the archive) - add to android/data/com.rockstagames.gtasa/.