27 species are part of the north american grand slam, they are:

1. whitetail deer
2. mule deer
3. coues deer
4. columbia blacktail deer
5. rocky mountain elk
6. tule elk
7. alaska-yukon moose
8. shiras moose
9. bison
10. pronghorn
11. cougar
12. black bear
13. grizzly bear
14. polar bear
15. mountain goat
16. dall sheep
17. stone sheep
18. bighorn sheep
19. desert bighorn sheep
20. brown bear
21. barren ground caribou
22. quebec-labrador caribou
23. mountain caribou
24. woodland caribou
25. musk ox
26. sikta blacktail deer
27. roosevelt elk

This list varies, some add different species of moose, muskox,caribou. Some include the walrus or turkey.