You’re looking for the logical argument here, not the statistical one. You sampled from snakes and said there is a 100% correlation with being a snake (notwithstanding the counterarg in an adjacent comment about scale-free snakes).

I am noting that the logical argument does not hold in the provided definition. If “some” attributes hold in a definition, you are expanding the definitional set, not reducing it, and thus creating a low-res definition. That is why I said: ‘this is a poor definition.’