| 100% | GRAMPUS | 7 | Genus of marine mammals whose only species is Risso's dolphin |
| 39% | LLAMA | 5 | Mammal whose name is spelled using only the letters of "mammal" |
| 35% | CETACEAN | 8 | Type of marine mammal, including dolphins |
| 34% | ORCA | 4 | Type of marine mammal Shamu was, at SeaWorld |
| 32% | ORCA | 4 | Type of marine mammal that 16-Down is |
| 31% | ACANTHUS | 8 | Genus of plants with large spiny leaves and spikes of white or purplish flowers whose species include bear’s breeches |
| 31% | EUONYMUS | 8 | Genus of small trees and shrubs whose species include the spindle tree |
| 31% | VIBURNUM | 8 | Genus of trees or shrubs whose species include blackhaw and guelder rose |
| 31% | MONK | 4 | Hawaiian ___ seal, marine mammal that is found only in Hawaii |
| 30% | HELENIUM | 8 | Genus of plants of the daisy family native to America whose species includes yellowdicks |
| 30% | DAPHNIA | 7 | Genus of crustaceans, some species of which are used as food for aquarium fish |
| 30% | ARNICA | 6 | Genus of yellow-flowered plants whose dried flower heads are used in treating bruises |
| 30% | OTTER | 5 | Mammal name whose etymology is akin to that of "water" |
| 30% | ERIGERON | 8 | Genus of plants of the daisy family, many species of which are cultivated as ornamentals |
| 30% | RUE | 3 | Genus of evergreen shrubs including the common — whose bitter leaves are used in herbal medicine |
| 30% | NASTURTIUM | 10 | Genus of plants in the cabbage family whose round flat leaves are used in salads |
| 29% | ORCA | 4 | Killer whale that is the largest species of dolphin |
| 29% | ORCA | 4 | Marine predator that is one of the few species to experience menopause |
| 29% | ORCAS | 5 | Marine animals whose genus name means "of the kingdom of the dead" |
| 28% | KALMIA | 6 | Genus of evergreen shrubs native to North America and Cuba whose foliage is toxic if eaten by certain animals |
| 28% | FRUITBATS | 9 | Flying mammals whose migration is Africa's largest |
| 28% | BONOBO | 6 | One of two species in the genus Pan, the other being the chimpanzee |
| 28% | MARTEN | 6 | Agile mammal of Asia, Europe and North America whose fur is highly valued |
| 28% | CROSSANDRA | 10 | Genus of plants of Africa and Asia with large yellow, orange or lilac flowers whose species include the firecracker flower |
| 27% | NED | 3 | Only Springfield resident whose house is destroyed by a hurricane, in an episode of The Simpsons |
| 27% | MOUSELEMUR | 10 | A species unique to Madagascar that is the world's smallest primate and one of the smallest mammals in the world: 2 wds. |
| 27% | STYX | 4 | Rock band whose only #1 hit was 1979's "Babe" |
| 27% | ARMADILLO | 9 | Burrowing mammal of the Americas much of whose body is covered with strong horny plates |
| 27% | SARAHMCLACHLAN | 14 | Canadian singer of "Adia" whose name's only vowels are A's: 2 wds. |
| 27% | ABBA | 4 | Band whose only US #1 hit is 1976's "Dancing Queen" |