>>25245981Gogoat's fur is literally made of grass, so it's pure grass type. The grass is a part of its body, so it's Grass-type and nothing else.
Sawsbuck, on the other hand, is simply a regular deer that has plants growing on it. They're not actually a part of it's body, they're separate things. Hence, Normal/Grass-type.
Same sort of thing applies to a few other dual-typed Normal-types as well. It makes enough sense.
