Nature Mysteries

As Head of Ranch Security, Hank knows that it's his job to clear the ranch of all intruders - and that includes gophers. But when Hank's efforts to rid the yard of one such critter causes a stampede in the middle of the cattle roundup, Loper decides that he just can't take it any more. He wants Hank to learn some manners, so he's sending him to - gulp! - obedience school.

The ranch is in the grip of a sweltering summer heat wave, and to make matters worse, Bruiser the Rottweiler is on the loose. First Bruiser attacks a defenseless fawn, then he threatens to come after Hank the Cowdog, the Head of Ranch Security!

Judy Moody is in a mood. A sleuthing, Nancy Drew kind of mood. So what’s a WBMS (world’s best mystery solver) to do? Go find a mystery, that’s what! And she doesn’t have to snoop for long: when Mr. Chips, a beloved crime-dog-in-training, goes missing, Judy Drewdy and her chums, agents Dills Pickle (Frank), Spuds Houdini (Rocky), and James Madagascar (Stink) find themselves smack-dab in the middle of a real-life, scare-your-pants-off whodunit. Was Mr. Chips stolen by dirty dognappers? And why are chocolate-chip cookies disappearing all over town?

Learn how fossils teach us about dinosaurs.

There's something spooky going on at the ranch! When Halloween arrives, Hank - the self-appointed Head of Ranch Security - has got his hands full of adventure. First there's a problem with the Tricker Trees. Then the ranch is invaded by two skeletons, a witch, and a pirate. And when Hank goes to investigate a strange sound in the cake house, he's sure it can only be one thing...a ghost. Can Hank rid the ranch of this unwanted visitor? Or is he destined to be spooked for good?

When Hank the Cowdog hears suspicious sounds coming from near Sally May's clothesline, it leads to a midnight investigation of the ranch. Before he knows it, Hank finds himself caught up with his old friend Eddy the Rac - and face-to-face with one of a dog's greatest enemies: the dreaded Laundry Monster!

Can you SPOT the mystery? Dink, Josh, and Ruth Rose are visiting the San Diego Zoo. When a rare amur leopard goes missing, everyone is a suspect! Can these expert clue hunters find out how the leopard got loose?

At Ridgewood Wildlife Sanctuary, even the slow winter season can take a surprising turn. Fraternal twins Ginny and Gino have spent their whole lives surrounded by wild animals, helping their parents care for everything from rescued deer to injured birds. But when a string of strange events starts disrupting the quiet routine at the sanctuary, the twins know something isn’t right. Teaming up with their best friends, Caroline and Victor, they begin to track down the cause — all while managing family life, friendships, and the daily demands of caring for wild animals. Blending humor, light...

After James gets a pen-and-ink set for his birthday, Marvin the beetle surprises him by creating an elaborate miniature drawing. James gets all the credit for the picture and before these unlikely friends know it they are caught up in a staged art heist at the Metropolitan Museum of Art that could help recover a famous drawing by Albrecht Dürer. But James can't go through with the plan without Marvin's help. And that's where things get really complicated (and interesting!)

Dive into an enchanting underwater world with Caster and Onni in this captivating tale of friendship, courage, and adventure. When a mysterious call echoes through their peaceful Coral Village, these two brave friends set off on a perilous journey to answer its plea. Along the way, they'll encounter a giant lobster guarding ancient secrets, navigate a treacherous whirlpool, and restore light to a forgotten underwater cave. But as they venture deeper into the unknown, they'll discover that a greater darkness lurks beneath the surface, threatening to engulf their beloved ocean.

It's time for the alpaca costume contest, and Abigail "Abbi" Wallace is excited to see it at the Maine State Fair. But there’s only one alpaca left—the rest are missing! What sent the alpacas packing? Abbi; her dog, Barkley; and her friends Lydia and Daniel are ready to sniff out this mystery!

There must be something in the water. The small lumberjacking town of Manchineel, nestled along Michigan’s northeastern shoreline, was destined to fail. With a curse hanging over it since its foundation, the town is in its final days in the spring of 1975. Among the townsfolk struggling to find new jobs and new homes, the Whitaker family is experiencing the greatest hardship. Crushed by mounting debt following their daughter’s horrific accident, they face an uncertain future with bleak prospects. An innocent discovery, however, brings fresh water to their table and new hope into their ...

Dink, Josh, and Ruth Rose are excited to see Uncle Warren's new racehorse, Whirlaway, in action. But the night before the big race, the horse disappears! Can the kids figure it out or is Whirlaway out of the winner's circle for good?

Help solve the mystery with the detective dog, set sail on an exciting adventure in the flying bath and cook up a feast for a very fussy king! This collection includes stories from four of Julia's illustrator partnerships: David Roberts, Sara Ogilvie, Catherine Rayner and Rebecca Cobb.

Bowser the dog is doing great. He's been adopted by Birdie, the greatest girl in the world, and he gets lots of love, lots of walks, and sometimes even bacon! But why is Birdie looking so worried? Who broke into their house? Why is the new girl in town digging into the old mystery of what really happened to Birdie's dad, a policeman killed in the line of duty? Bowser better keep his ears perked and his paws at the ready. A murder case that went cold long ago is fixing to get way too hot.

Hank learns about a tool thief on the loose who uses a monkey to help him do his dirty work. And before long, Hank finds himself face-to-face with the pilfering primate! Can Hank help to stop the criminals in their tracks, or will the crooks make a monkey out of the Head of Ranch Security?

The Wundermutt dog food company is searching for a very special dog to be in their commercials, and the Aldens bring their dog, Watch, to the tryouts! But plenty of other dog owners are hoping their dogs get the job too - including a dog that's already famous. Does Watch have what it takes to be a star?

It's the weekend—a perfect day for a sail off the coast of Maine. But there's something fishy going on with the local dolphins and Abbi, Lydia, and Daniel are determined to find out why. Are the dolphins twisting, leaping, and whistling because they're playing? Or is it a warning of nearby danger? And if it's danger, how can the kids get grownups to believe them? Abbi and her friends are diving head first into this mystery!

Mysteries follow super-sleuth Cam Jansen everywhere she goes...even to the zoo. When a few monkeys suddenly go missing from their cage, Cam is sure she knows how the thief took them. Can she find the missing monkeys before they are lost forever?

One day in the park, the Aldens’ dog, Watch, comes across a mysterious box with a note inside. “Congratulations!” the note says. “You’ve found it!” The box is part of a game called Geocaching. Soon, Henry, Jessie, Violet, and Benny are searching all over town for hidden boxes and making friends with other kids in the geocaching club. But is one of the club members a thief?