To the OP's question: Bama Crimson Tide ... Stanford Cardinal ... Navy Midshipmen ... Syracuse Orange ... NC State Wolfpack ... Nevada Wolf Pack ... Tulsa Golden Hurricane ... Tulane Green Wave ... Marshall Thundering Herd ... North Texas Mean Green ... UMass Minutemen ... ND Fighting Irish ... Illinois Fighting Illini ... that's just FBS.
Those break down this way:
- Number based on weather and other natural events: 3 (tide, hurricane, wave).
- Number based on animal social structures: 3 (wolfpack, wolf pack, herd).
- Number based on just a color: 3 (cardinal, orange, mean green).
- Number based on military duties or militaristic humans: 4 (midshipmen, minutemen, fighting Irish, fighting Illini).
But why stick solely with the ones whose names do not end in 's'? Here's a more holistic breakdown of mascots throughout FBS.
First the animal mascots (71):
- feline: 19 (panther, panther, golden panther, nittany lion, jaguar, bobcat, bobcat, wildcat, wildcat, wildcat, wildcat, cougar, cougar, cougar, tiger, tiger, tiger, tiger, tiger)
- avian: 19 (owl, owl, owl, eagle, eagle, eagle, golden eagle, golden flash (eagle), falcon, falcon, jayhawk, redhawk, warhawk, hawkeye, cardinal, cardinal, duck, game cock, roadrunner)
- canine: 11 (husky, husky, husky, wolf pack, wolf pack, lobo (wolf), red wolf, bulldog, bulldog, bulldog, bulldog)
- bovine: 5 (bull, bull, longhorn cow, buffalo, thundering herd)
- equine: 3 (mustang, bronco, bronco)
- ursine: 3 (bear, bear, bruin)
- other mammal: 7 (ram, razorback, bearcat, wolverine, badger, beaver, golden gopher)
- amphibian, reptile, and insect: 4 (gator, terrapin, horned frog, yellow jacket (wasp))
Next the humans (44):
- military or militaristic: 24 (volunteer, pirate, knight, black knight, scarlet knight, midshipman, minuteman, blue devil, cavalier, commodore, spartan, spartan, trojan, trojan, vandal, blue raider, red raider, rebel, rebel, Seminole, fighting Illini, ragin' Cajun, fighting Irish, rainbow warrior)
- non-military: 20 (monarch, demon deacon, tarheel, sooner, hoosier, cowboy, cowboy, mountaineer, mountaineer, cornhusker, boilermaker, hilltopper, aggie, aggie, aggie, 49er, miner, Ute, Chippewa, Aztec)
Finally, the "others" (13):
- weather/inanimate: 5 (crimson tide, green wave, hurricane, golden hurricane, cyclone)
- color: 3 (orange, mean green, cardinal)
- means of transportation: 1 (rocket)
- plants and plant material: 1 (buckeye)
- rubber overshoes: 1 (zips)
- word of encouragement: 1 (hokie)
- unknown: 1 (sun devil...deity or mirage?)
Heh, it really is a do-nothing sort of day....