Answers: (And note, the horse in the above photo is Wicked Strong.)
1. California Chrome: Horse
2. Wildcat Red: Horse
3. Mendocino Purps: Cannabis
4. Wicked Strong: Horse
5. Dynamite: Cannabis
6. Kaboom: Cannabis
7. Intense Holiday: Horse
8. Sunset Sherbert: Cannabis
9. Blue Moonshine: Cannabis
10. Wonder Haze: Cannabis
11. Harry’s Holiday: Horse
12. Big Bazinga: Horse
13. Danky Doodle: Cannabis
14. General A Rod: Horse
15. Uncle Sigh: Horse
16. Mr. Nice: Cannabis
17. Samraat: Horse
18. Chitu: Horse
19. Buddha’s Sister: Cannabis
20. Candy Boy: Horse
21. Caramelicious: Cannabis
22. Romping Goddess: Cannabis
23. Hoppertunity: Horse
24. Cannatonic: Cannabis
25. Qrazy Train: Cannabis
26. Vinceremos: Horse
27. Pablo Del Monte: Horse
28. El Jefe: Cannabis
Full key:
Horses: 1, 2, 4, 7, 11, 12, 14, 15, 17, 18, 20, 23, 26, 27
Cannabis: 3, 5, 6, 8, 9, 10, 13, 16, 19, 21, 22, 24, 25, 28