| 100% | KOALA | 5 | Tree-dweller that sleeps 20 or so hours a day |
| 49% | KOALA | 5 | "Bear" that can sleep 20 hours a day |
| 49% | KOALA | 5 | Australian animal that sleeps up to 20 hours a day |
| 43% | KOALA | 5 | Animal that can sleep up to 22 hours a day |
| 35% | LOCUST | 6 | Tree or insect that came in a plague |
| 35% | LONGISH | 7 | Like a film that's 2 1/2 hours or so |
| 34% | ASH | 3 | Tree that's also a shade of gray or blonde |
| 34% | BED | 3 | Sleeping spot that comes in a king or a queen size |
| 34% | IVY | 3 | Plant that might climb a tree or a wall |
| 33% | ENDURANCE | 9 | Type of car-racing that lasts many hours or days |
| 33% | BYE | 3 | A short word that means farewell or so long |
| 32% | BRANCH | 6 | Limb of a tree ... or a word that means "area of academic focus" |
| 31% | SPOON | 5 | Sleep with a ___ under your pillow or freeze it (Kids' ritual to manifest a snow day) |
| 31% | SLEEP | 5 | Koalas do this for up to 20 hours a day |
| 31% | BAT | 3 | Cave dweller that sleeps upside down |
| 30% | ROUGH | 5 | Texture that's harsh or bumpy, like a tree's bark |
| 30% | PICKUP | 6 | Learn ... or a word that can precede the ends of 20-, 29-, 44- and 53-Across |
| 30% | TOMORROW | 8 | A day that never comes |
| 30% | ELEPHANT | 8 | Leathery-skinned mammal who can eat 22 hours a day |
| 30% | CNN | 3 | US cable TV network, covers news 24 hours a day |
| 30% | IHOP | 4 | Breakfast chain typically open 24 hours a day |
| 30% | YOUDONTSAY | 10 | "Is that so?," or a hint to the communication methods found in this puzzle's circled letters |
| 30% | SATURDAYNIGHT | 13 | Popular date time ... or a phrase that can precede the starts of 20-, 33- and 40-Across |
| 29% | UNDERAGE | 8 | 20 or less, at a bar |
| 28% | OWL | 3 | Bird that sleeps during the day |
| 28% | SNORLAX | 7 | Blue Pokémon that sleeps a lot |
| 28% | PIG | 3 | Animal that sleeps in a sty |
| 28% | WILLOW | 6 | A tree that weeps |
| 28% | PHONE | 5 | The average American spends about four hours a day on it |
| 28% | PHONE | 5 | The average American spends over four hours a day on it |