Dogs and wolves are the same species (Canis Lupus), not just members of the same genus. Genus Allium is much bigger than genus Canis (over 800 species) and its members are much less closely related to each other. The common food species are at least evolutionary cousins though, unlike other parts of the category. The onions and chives all share subgenus Cepa, while garlic and leeks are off in subgenus Allium.
Dogs and wolves are the same species (Canis Lupus), not just members of the same genus. Genus Allium is much bigger than genus Canis (over 800 species) and its members are much less closely related to each other. The common food species are at least evolutionary cousins though, unlike other parts of the category. The onions and chives all share subgenus Cepa, while garlic and leeks are off in subgenus Allium.