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This June 13, 2021 photo provided by the Forest Preserve District of Will County in Naperville, Ill., shows a tree at Whalon Lake Dog Park in Naperville that dog owner Asher Thomas sprayed, along with over a dozen other trees, with a pruning sealer that he thought would prevent further damage after another dog owner's German shepherd had gnawed away the bark. (Anthony Schalk / Forest Preserve District of Will County via AP)

A man who said he sprayed trees in a Naperville park to protect them after an anxious dog chewed off the bark has been ticketed by authorities.

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Mushrooms popped up in a Chicago parkway after recent rains. (Patty Wetli / WTTW News)

What’s up with the mushrooms that appear and then quickly disappear after wet weather? Where do they come from, and where do they go?

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The 2020 winner in the front garden category. (Courtesy of Chicago Bungalow Association)

This year’s contest is sure to be more competitive than ever, with expanded eligibility and the doubling of winners’ cash prizes.

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A couple walks their dog in Los Angeles, on Jan. 24, 2021. (AP Photo / Damian Dovarganes, File)

In the eyes of the law, pets are property when it comes to divorce, but new ways of working out custody of the dog, cat or parrot have sprung up with special mediators and “petnups” to avoid courtroom disputes.

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In this Monday, April 22, 2019 file photo, a plane flies over the south air traffic control tower at O'Hare International Airport in Chicago. (AP Photo / Kiichiro Sato, File)

The dog was one of 34 animals — 33 dogs and one cat — imported by an animal rescue organization from Azerbaijan to O’Hare International Airport in Chicago on June 10. 

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Nine species of echinacea are native to the U.S. (Patty Wetli / WTTW News)

There are natives and then there are plants known as “nativars,” and wildlife can tell the difference.

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Monty & Rose are pinning their hopes on an egg laid in their second nest attempt. (Courtesy of Chicago Park District)

Just a week after losing their first nest to a skunk attack, Monty and Rose have produced a second nest and laid one egg, the Chicago Park District announced. 

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The thousands of trees damaged during 2020's powerful derecho storm demonstrated the vulnerability of Chicago's tree canopy. (Patty Wetli / WTTW News)

“Trees need care like streets need repairing,” said Malcolm Whiteside, deputy commissioner for Chicago’s Department of Forestry, who threw his support behind the creation of an Urban Forestry Advisory Board.

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Monty and Rose lost their 2021 clutch of eggs to a skunk. (Courtesy of Chicago Park District)

The latest chapter in the saga of Chicago’s beloved plovers, Monty and Rose, is a sad one, with wildlife officials reporting the couple’s 2021 clutch of eggs has been lost to a skunk attack. Plover monitors are hopeful the couple will build a second nest. 

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In this Tuesday, Oct. 30, 2012, file photo, Kim Bertini looks over some of the 15,000 dead fish that washed up near her backyard on Lake Madeline in Galveston, Texas. (Jennifer Reynolds / The Galveston County Daily News via AP, File)

Oxygen levels have dropped in hundreds of lakes in the United States and Europe over the last four decades, a new study found. And the authors said declining oxygen could lead to increased fish kills, algal blooms and methane emissions.

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Lane Beach is five-star worthy. (Alexandra Silets / WTTW News)

For three months out of the year, Chicago’s every bit as much of a beach town as Los Angeles or Miami. As we kick off summer 2021, here are some things you might not know about the city’s sandy shore.

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Piping plover eggs at Montrose beach in 2021. (Courtesy of Chicago Park District)

Surveillance cameras recently captured images of a mylar balloon bumping up against the nesting site of Chicago’s beloved pair of piping plovers. Wildlife advocates have long been critical of such inflatables and the dangers they pose to birds and other animals.

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In this Wednesday, Aug. 28, 2013, file photo, one of the tigers living at the Greater Wynnewood Exotic Animal Park is pictured at the park in Wynnewood, Okla. (AP Photo / Sue Ogrocki, File)

Federal officials have removed the last of the 68 big cats from the private zoo in Oklahoma that had been the center of the “Tiger King” saga.

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Liam Durnan hikes in Cook County’s Spring Lake Nature Preserve. (Patty Wetli / WTTW News)

Liam Durnan has been on a yearlong caper, hiking all 350 miles of Cook County forest preserve trails. “When people picture the forest preserve nearest them, most people think of it being the picnic groves,” he said. “They don’t know how big this thing is. It’s just incredible.”

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In this Sept. 2015 photo taken by Colby Griffiths on the North Edisto River in South Carolina, scientist Bryan Keller holds a bonnethead shark. (Photo courtesy Bryan Keller via AP)

Researchers said their marine laboratory experiments with a small species of shark confirm long-held speculation that sharks use magnetic fields as aids to navigation — behavior observed in other marine animals such as sea turtles.

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Three piping plover eggs have been confirmed by wildlife officials. (Courtesy of Chicago Park District)

The beloved pair of piping plovers have established a nest, smack in the middle of habitat only just protected for the birds this spring.