The book uses mashi of different animal kinds:
Humans walk.
Cattle walk.
Goats walk.
Walking is therefore not restricted to one species. The example concerns a characteristic capacity at the kind level; a particular person being unable to walk at some moment is a different issue.
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Working through mashi
The Five Universals: Genus, Species, Differentia, Property, Common Accident
The book uses mashi of different animal kinds:
Humans walk.
Cattle walk.
Goats walk.
Walking is therefore not restricted to one species. The example concerns a characteristic capacity at the kind level; a particular person being unable to walk at some moment is a different issue.