• S1.E1 ∙ Heartthrob Hamster/Astronuts
• S1.E2 ∙ Muck Amok/Follow Those Footprints
• S1.E3 ∙ Breezy Rider/Swamp Thing
• S1.E4 ∙ The Treasure of Bad Dog Bart/Pet Sounds
• S1.E5 ∙ Cave Conundrum/Daisy's Colossal Fossil
• S1.E6 ∙ There's Gold in Them Thar Hills/Nature Cat and Mr. Hide
• S1.E7 ∙ Where Have All the Butterflies Gone?!/For the Birdies!
• S1.E8 ∙ Stream and Shout/Hal's Day Off
• S1.E9 ∙ Travelin' Seeds/Tally Ho! A Rainbow
• S1.E10 ∙ Ants Revolution/Tide Pool Tough
• S1.E11 ∙ Hooray, It's Arbor Day/Goodnight, Gracie
• S1.E12 ∙ Ze Worm Whisperer/Love You, Michael Bluejáy
• S1.E13 ∙ Happy Halenstein's Day/The Groundhog Way
• S1.E14 ∙ Star Gazers/A Jump to Remember
• S1.E15 ∙ Earth Day Today/Earth Day Every Day
• S1.E16 ∙ Kingdom of Rotting Log/Can You Dig It?
• S1.E17 ∙ Mud Love/Call It a Night
• S1.E18 ∙ Woodpecker Picks a Place/Here Comes the Sun
• S1.E19 ∙ The Great Grasshopper Race/Fall for Hal
• S1.E20 ∙ Playground-Palooza/Small But Big
• S1.E21 ∙ Slime Time/Rock Stars
• S1.E22 ∙ Gimme Shelter/Goin' Batty
• S1.E23 ∙ The Legend of Gold Gardens/Winter Dance Party
• S1.E24 ∙ Ice Is Nice/Bird's Eye View
• S1.E25 ∙ Runaway Pumpkin/Lady Bug Tough
• S1.E26 ∙ Stop That Squirrel/Onward and Pondward
• S1.E27 ∙ Appily Ever After/Sound Off
• S1.E28 ∙ The Shell Game/Heron Food Blues
• S1.E29 ∙ Spring Hunter 3000/The Case of the Missing Moon
• S1.E30 ∙ Mighty Mountain Climbers/Bug Eating Plants!
• S1.E31 ∙ Flight of the Firefly/Thunderstruck
• S1.E32 ∙ Plants Got The Moves/Magnet Mania
• S1.E33 ∙ Return to Mighty Mountain/Welcome to the Vernal Pond
• S1.E34 ∙ Ocean Commotion, Part 1
• S1.E35 ∙ Ocean Commotion, Part 2
• S1.E36 ∙ The Queen of the Night/Space Rocks
• S1.E37 ∙ Croak and Swagger/Puddle Pool Party
• S1.E38 ∙ The Glow Games/Have a Grape Day
• S1.E39 ∙ Flamingo-A-Go-Go/What a Tangeled Web
• S1.E40 ∙ The Shellersons/Only the Shadow Knows
• S1.E41 ∙ Rain Is Coming Tomorrow Early/After the Rain

• S2.E1 ∙ Moth Frolic-Fest/Dune Patrol
• S2.E2 ∙ Stop and Hear the Cicadas/Cold-Blooded
• S2.E3 ∙ Lights Out for Sea Turtles/Nature Art
• S2.E4 ∙ Houston's Outdoor Adventure/Hotel Hal
• S2.E5 ∙ Lets Talk Turkey Vulture/Prescription: Nature
• S2.E6 ∙ Enter The Dragonfly/Water Woes
• S2.E7 ∙ Garden Impossible/Agents of the Great Outdoors
• S2.E8 ∙ The Return Of Bad Dog Bart
• S2.E9 ∙ Bunyan Trouble/Foggy Feat
• S2.E10 ∙ Rights or Wrong/Amazing Animals
• S2.E11 ∙ Backyard Bigfoot/Imperfect Produce
• S2.E12 ∙ Man-Oh-Mangrove/Northern Light Sights
• S2.E13 ∙ A Prickly Problem/A Shedtime Story
• S2.E14 ∙ The Big Bath Brouhaha/Fossil Hunt
• S2.E15 ∙ Daisy's Wildflower Round-Up/A Party for Squeeks
• S2.E16 ∙ Are You My Egg?/SOS (Save Our Salad)
• S2.E17 ∙ Snow Way to Keep Warm/So You Think You Know Nature
• S2.E18 ∙ The Deal With Eels/Skip It!
• S2.E19 ∙ Wild Batts!/No Bird Left Behind!
• S2.E20 ∙ Soil Turmoil/Wisteria Hysteria
• S2.E21 ∙ Nature Cat's Nature Stories/Pattern Problema

• S3.E1 ∙ Animal Rescue Crew/Nature of Dreams
• S3.E2 ∙ Freezin' in the Summer Season/Total Eclipse of the Sun
• S3.E3 ∙ Onward and Songward/Why Did the Turtle Cross the Road?
• S3.E4 ∙ Secrets of the Old Prairie/A Sticky Sweet Tree Treat
• S3.E5 ∙ Amber Rocks/The Big Stink
• S3.E6 ∙ Magical Mushroom Mystery Tour; A Midsummer Day's Dream
• S3.E7 ∙ Great Salt Lake/The Praying Mantis Hunters
• S3.E8 ∙ Tally Ho, A Volcano!/No Rest for the Squeeky
• S3.E9 ∙ Niagara Falls/Nature Plant
• S3.E10 ∙ The Grand Mystery of the Grand Canyon/Strongest Show on Earth
• S3.E11 ∙ Under Pressure/Rainy Day
• S3.E12 ∙ A Nature Carol
• S3.E13 ∙ Sweet Symbiosis/Strawberry Fields Forever
• S3.E14 ∙ More than A Monkey Wrench/Trail Blazers
• S3.E15 ∙ Hal the Duck/The Crow-lympics
• S3.E16 ∙ What A Pearl/Wild Bee Motel

• S4.E1 ∙ Nature Dance Party/Bad Dog Bart Jr.
• S4.E2 ∙ Rock Clues/Sweet Scent
• S4.E3 ∙ The Leaf Fairy/Midge Over Troubled Water
• S4.E4 ∙ The Nature Nap Dilemma/Wild River Adventure
• S4.E5 ∙ Agents of the Great Outdoors/The Nature-tastic Four
• S4.E6 ∙ The Petrified Wood Mystery/Nature Buddy Clubhouse
• S4.E7 ∙ Moss Mouse/Leaf Moving Machine Mayhem
• S4.E8 ∙ Make Room for Daddy Longlegs/Outerspace Detectives
• S4.E9 ∙ Saving Seeds/Onward and Mossward
• S4.E10 ∙ Outdoor Nature Warrior/Hide and Go Screech!

• S5.E1 ∙ The Legend of Cowboy Kitty/The Corn Conundrum
• S5.E2 ∙ Window Worries/The Pinecone Genie