Buttonwood Park Zoo has been welcoming guests to visit its animals since it first opened back in 1894.

The late 19th century opening makes it the third-oldest zoo in New England and the 12th-oldest in the country.

READ MOREAdorable New Baby Beavers Born at Buttonwood Park Zoo

Throughout that time, there have been numerous folks working tirelessly behind the scenes and this week, the zoo is recognizing many of them.

READ MORENew Bedford Zoo Delivers Sweet Sendoff For Valued Volunteer

What Is Zookeeper Appreciation Week?

Each year, during the third week of July, zookeepers from all over are celebrated.

Buttonwood Park Zoo via Facebook
Buttonwood Park Zoo via Facebook
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National Zookeeper Week/Zookeeper Appreciation Week is dedicated to "focusing on efforts made by all zookeepers who protect and preserve our wildlife and vanishing habitats."

Bill Sampson’s Legacy at BPZOO

Buttonwood Park Zoo shared a touching message to former keeper Bill Sampson on its Facebook page.

"His lifelong passion for animals, great and small, his unwavering dedication to the Zoo, and his role as a mentor to many are deeply cherished," the zoo posted.

Buttonwood Park Zoo via Facebook
Buttonwood Park Zoo via Facebook
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William "Bill" Sampson passed away on July 13 of this year at the age of 73.

Honoring Bill Sampson

The post portrayed Bill as a beloved Senior Keeper, highlighted through a collection of photos.

Buttonwood Park Zoo via Facebook
Buttonwood Park Zoo via Facebook
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Buttonwood Park Zoo via Facebook
Buttonwood Park Zoo via Facebook
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As you can see, Bill's passion and love of animals was prevalent.

READ MORE: New Bedford's Buttonwood Park Zoo Closing to Keep Animals Cool

"As we celebrate our current Zookeepers this week, we also remember those who paved the way. Bill’s legacy of care, conservation, and connection lives on in the hearts of our team and the work we do every day," the Facebook post read.

Buttonwood Park Zoo via Facebook
Buttonwood Park Zoo via Facebook
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So many of us have fond memories of going to the zoo, bringing our kids or grandkids there and spending time with the animals, both past and present.

A sentiment that is echoed through a touching tribute as BPZOO Director Shara Rapoza shared, "I have no doubt he has been reunited with Ruth, the elephant he loved so much, and they are once again roaming the woods together beyond the rainbow bridge.”

READ MORE: New Bedford's Beloved Ruth the Elephant Has Died

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Gallery Credit: Tammie Toren

Buttonwood Park Zoo Welcomes Bearded Emperor Tamarin Monkey

Buttonwood Park Zoo welcomed a bearded emperor tamarin monkey in 2022 and shemight be the cutest monkey you have ever seen.

Gallery Credit: BPZOO/Jessica Martinho

20 Fascinating Photos Of Zoo Animals Getting Weighed and Measured

The annual weigh-in at the U.K.'s largest zoo allows zookeepers and veterinarians to record vital statistics and track the health and wellbeing of its more than 10,000 animals.

Gallery Credit: Rob Carroll

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