Related Clues:

• Canis lupus familiaris, for dogs
• Biology class
• Kinds or sorts
• Biology grouping
• Genus subdivision
• Homo, e.g.
• Homo sapiens, for one
• Part of a family
• Biology groups
• Homo, for humans
• The 'Homo' in 'Homo sapiens'
• Biological grouping
• Class below 'family'
• Homo vis-à-vis humans
• "Homo," for humans