Season 1
S1.E1 ∙ Heartthrob Hamster/AstronutsS1.E2 ∙ Muck Amok/Follow Those FootprintsS1.E3 ∙ Breezy Rider/Swamp ThingS1.E4 ∙ The Treasure of Bad Dog Bart/Pet SoundsS1.E5 ∙ Cave Conundrum/Daisy's Colossal FossilS1.E6 ∙ There's Gold in Them Thar Hills/Nature Cat and Mr. HideS1.E7 ∙ Where Have All the Butterflies Gone?!/For the Birdies!S1.E8 ∙ Stream and Shout/Hal's Day OffS1.E9 ∙ Travelin' Seeds/Tally Ho! A RainbowS1.E10 ∙ Ants Revolution/Tide Pool ToughS1.E11 ∙ Hooray, It's Arbor Day/Goodnight, GracieS1.E12 ∙ Ze Worm Whisperer/Love You, Michael BluejáyS1.E13 ∙ Happy Halenstein's Day/The Groundhog WayS1.E14 ∙ Star Gazers/A Jump to RememberS1.E15 ∙ Earth Day Today/Earth Day Every DayS1.E16 ∙ Kingdom of Rotting Log/Can You Dig It?S1.E17 ∙ Mud Love/Call It a NightS1.E18 ∙ Woodpecker Picks a Place/Here Comes the SunS1.E19 ∙ The Great Grasshopper Race/Fall for HalS1.E20 ∙ Playground-Palooza/Small But BigS1.E21 ∙ Slime Time/Rock StarsS1.E22 ∙ Gimme Shelter/Goin' BattyS1.E23 ∙ The Legend of Gold Gardens/Winter Dance PartyS1.E24 ∙ Ice Is Nice/Bird's Eye ViewS1.E25 ∙ Runaway Pumpkin/Lady Bug ToughS1.E26 ∙ Stop That Squirrel/Onward and PondwardS1.E27 ∙ Appily Ever After/Sound OffS1.E28 ∙ The Shell Game/Heron Food BluesS1.E29 ∙ Spring Hunter 3000/The Case of the Missing MoonS1.E30 ∙ Mighty Mountain Climbers/Bug Eating Plants!S1.E31 ∙ Flight of the Firefly/ThunderstruckS1.E32 ∙ Plants Got The Moves/Magnet ManiaS1.E33 ∙ Return to Mighty Mountain/Welcome to the Vernal PondS1.E34 ∙ Ocean Commotion, Part 1S1.E35 ∙ Ocean Commotion, Part 2S1.E36 ∙ The Queen of the Night/Space RocksS1.E37 ∙ Croak and Swagger/Puddle Pool PartyS1.E38 ∙ The Glow Games/Have a Grape DayS1.E39 ∙ Flamingo-A-Go-Go/What a Tangeled WebS1.E40 ∙ The Shellersons/Only the Shadow KnowsS1.E41 ∙ Rain Is Coming Tomorrow Early/After the Rain
Season 2
S2.E1 ∙ Moth Frolic-Fest/Dune PatrolS2.E2 ∙ Stop and Hear the Cicadas/Cold-BloodedS2.E3 ∙ Lights Out for Sea Turtles/Nature ArtS2.E4 ∙ Houston's Outdoor Adventure/Hotel HalS2.E5 ∙ Lets Talk Turkey Vulture/Prescription: NatureS2.E6 ∙ Enter The Dragonfly/Water WoesS2.E7 ∙ Garden Impossible/Agents of the Great OutdoorsS2.E8 ∙ The Return Of Bad Dog BartS2.E9 ∙ Bunyan Trouble/Foggy FeatS2.E10 ∙ Rights or Wrong/Amazing AnimalsS2.E11 ∙ Backyard Bigfoot/Imperfect ProduceS2.E12 ∙ Man-Oh-Mangrove/Northern Light SightsS2.E13 ∙ A Prickly Problem/A Shedtime StoryS2.E14 ∙ The Big Bath Brouhaha/Fossil HuntS2.E15 ∙ Daisy's Wildflower Round-Up/A Party for SqueeksS2.E16 ∙ Are You My Egg?/SOS (Save Our Salad)S2.E17 ∙ Snow Way to Keep Warm/So You Think You Know NatureS2.E18 ∙ The Deal With Eels/Skip It!S2.E19 ∙ Wild Batts!/No Bird Left Behind!S2.E20 ∙ Soil Turmoil/Wisteria HysteriaS2.E21 ∙ Nature Cat's Nature Stories/Pattern Problema
Season 3
S3.E1 ∙ Animal Rescue Crew/Nature of DreamsS3.E2 ∙ Freezin' in the Summer Season/Total Eclipse of the SunS3.E3 ∙ Onward and Songward/Why Did the Turtle Cross the Road?S3.E4 ∙ Secrets of the Old Prairie/A Sticky Sweet Tree TreatS3.E5 ∙ Amber Rocks/The Big StinkS3.E6 ∙ Magical Mushroom Mystery Tour; A Midsummer Day's DreamS3.E7 ∙ Great Salt Lake/The Praying Mantis HuntersS3.E8 ∙ Tally Ho, A Volcano!/No Rest for the SqueekyS3.E9 ∙ Niagara Falls/Nature PlantS3.E10 ∙ The Grand Mystery of the Grand Canyon/Strongest Show on EarthS3.E11 ∙ Under Pressure/Rainy DayS3.E12 ∙ A Nature CarolS3.E13 ∙ Sweet Symbiosis/Strawberry Fields ForeverS3.E14 ∙ More than A Monkey Wrench/Trail BlazersS3.E15 ∙ Hal the Duck/The Crow-lympicsS3.E16 ∙ What A Pearl/Wild Bee Motel
Season 4
S4.E1 ∙ Nature Dance Party/Bad Dog Bart Jr.S4.E2 ∙ Rock Clues/Sweet ScentS4.E3 ∙ The Leaf Fairy/Midge Over Troubled WaterS4.E4 ∙ The Nature Nap Dilemma/Wild River AdventureS4.E5 ∙ Agents of the Great Outdoors/The Nature-tastic FourS4.E6 ∙ The Petrified Wood Mystery/Nature Buddy ClubhouseS4.E7 ∙ Moss Mouse/Leaf Moving Machine MayhemS4.E8 ∙ Make Room for Daddy Longlegs/Outerspace DetectivesS4.E9 ∙ Saving Seeds/Onward and MosswardS4.E10 ∙ Outdoor Nature Warrior/Hide and Go Screech!