![The London Zoo’s 'Bear Pit.'](/sites/default/files/styles/large/public/SB%201%20London%20Zoo%20Bear%20Pit%20Post.jpg?itok=rugXDNmi)
London Zoo Bear Pit Post
![Schönbrunn Zoo postcard.](/sites/default/files/styles/large/public/SB%202%20Schonbrunn%20Zoo%20Postcard.jpg?itok=-0ySb-hM)
Schönbrunn Zoo Postcard
![An overhead view of the London Zoo in 1828.](/sites/default/files/styles/large/public/SB%204%20The%20Gardens%20of%20the%20Zoological%20Society%20Regent%E2%80%99s%20Park.png?itok=Hg2vItu2)
The Gardens of the Zoological Society Regent’s Park
![William Temple Hornaday with a bison.](/sites/default/files/styles/large/public/SB%207%20William%20Temple%20Hornaday%20and%20a%20Bison.jpg?itok=E7-whPzO)
William Temple Hornaday and a Bison
![A bear in the Lincoln Park Zoo in Chicago.](/sites/default/files/styles/large/public/SB%208%20Elevated%20Snoozer.png?itok=7cX-Mm_k)
“An Elevated Snoozer”
![A brown bear looks out from inside an open-air enclosure at the London Zoo.](/sites/default/files/styles/large/public/SB%209%20Brown%20Bear%20at%20the%20London%20Zoo.jpg?itok=d44O-IgV)
Brown Bear at the London Zoo
![The only living quagga ever photographed.](/sites/default/files/styles/large/public/SB%2010%20A%20Quagga%20at%20the%20London%20Zoo.jpg?itok=bWbNPeb3)
A Quagga at the London Zoo
![An exhibit at Detroit, Michigan’s Belle Isle Children’s Zoo.](/sites/default/files/styles/large/public/SB%2013%20The%20Old%20Lady%20Guiney%20Pig%20Who%20Lived%20in%20the%20Shoe%20at%20the%20Children%E2%80%99s%20Zoo.jpg?itok=ApbN8z1o)
The Old Lady Guinea Pig Who Lived in the Shoe at the Children’s Zoo
![A sit-in in Lisbon, Portugal in 2014.](/sites/default/files/styles/large/public/2%20protests%20over%20Marius%27s%20execution.jpg?itok=d7SUBoO_)
Protest over Marius’s Execution
![Thousands attend a music festival at the Albuquerque BioPark Zoo.](/sites/default/files/styles/large/public/7%20Albuquerque%20Zoo.jpg?itok=V-i2FBuK)
Albuquerque, New Mexico Zoo
![Children and adults walk through the tunnels of the Dallas World Aquarium Zoo.](/sites/default/files/styles/large/public/9%20Dallas%20World%20Aquarium%20Zoo.jpg?itok=kLU9JScQ)
Dallas World Aquarium Zoo
![A Roman marble mosaic from CE 194 in Edessa, Turkey.](/sites/default/files/styles/large/public/10%20Orpheus%20Taming%20Wild%20Animals.jpg?itok=X69tG8GG)
Orpheus Taming Wild Animals
Royal Menagerie
![An early 19th century advertisement for George Wombewell’s Royal Menagerie.](/sites/default/files/styles/large/public/13%20Wombwell%27s%20royal%20menagerie.jpg?itok=PWIRz6-7)
Wombwell’s Royal Menagerie
![Carl Krone’s circus exhibit.](/sites/default/files/styles/large/public/14%20Continental%20Menagerie%20of%20the%20Crown.jpg?itok=V22b3t9P)
Continental Menagerie of the Crown
![Adhela, Obaysch’s partner, and Guy Fawkes.](/sites/default/files/styles/large/public/23%20Mother%20and%20child%20Hippopotamus.jpg?itok=6mcJpUKF)
Mother and Child Hippopotamus
![Jumbo, the male African Bush elephant who had long been a popular attraction at the London Zoo.](/sites/default/files/styles/large/public/25%20Jumbo%20at%20P.T.%20Barnum%27s%20Circus.jpg?itok=QeQHe1UU)
Jumbo at P.T. Barnum’s Circus
![William Temple Hornaday feeds an antelope.](/sites/default/files/styles/large/public/27%20William%20Temple%20Hornday%20and%20an%20Antelope.jpg?itok=3UIppOic)
William Temple Hornaday and an Antelope
![Polar bears around 1910 in the Belle Isle Park Bear Pit.](/sites/default/files/styles/large/public/28%20Bear%20pit%20at%20Belle%20Isle%20Park.jpg?itok=r1AlXNsx)
Bear Pit at Belle Isle Park
![Two zookeepers restraining an elephant who had broken out of the New York Zoological Park.](/sites/default/files/styles/large/public/29%20The%20end%20of%20the%20rampage.jpg?itok=nnOZ8HER)
"‘Alice’ under control and thinking it over”
![Animal cages at the Woodland Park Zoo in Seattle, Washington.](/sites/default/files/styles/large/public/30%20Animal%20Cages%2C%20Woodland%20Park.jpg?itok=thJi-SVn)
Animal Cages, Woodland Park
![Schoolchildren gathered around a birdcage at the National Zoo.](/sites/default/files/styles/large/public/33%20A%20Class%20at%20the%20Zoo.jpg?itok=Idmm2P0U)
A Class at the Zoo
![A woman feeding a camel in New York’s Central Park Zoo.](/sites/default/files/styles/large/public/34%20%2522The%20Faithful%20Ship%20of%20the%20Desert%2522.jpg?itok=KKiSM8IR)
“The Faithful Ship of the Desert”
![A 1907 postcard from the Hamburg Zoo.](/sites/default/files/styles/large/public/35%20Nordland-Panorama.jpg?itok=8oQfbxV5)
Nordland-Panorama
![This visitors’ path is meant to recreate a jungle.](/sites/default/files/styles/large/public/37%20landscape%20immersion.jpg?itok=bMkQ7Enq)
Landscape Immersion
![Visitors at the Leipzig Zoo viewing polar bears without bars.](/sites/default/files/styles/large/public/38%20Leipzig%20Zoo%20Bear%20Gallery.jpg?itok=RxnyIUeJ)
Leipzig Zoo Bear Gallery
![Visitors could get very close to the bears in Memphis Tennessee’s zoo.](/sites/default/files/styles/large/public/39%20Bear%20Pit%20in%20Memphis%2C%20Tenn.jpg?itok=bRQn4n9t)
Bear Pit in Memphis, Tennessee
![Alfred Hitchcock riding a turtle.](/sites/default/files/styles/large/public/40%20Alfred%20Hitchcock%20Riding%20a%20Turtle.jpg?itok=myHajq_g)
Alfred Hitchcock Riding a Turtle
![Children excitedly look at bears through iron bars.](/sites/default/files/styles/large/public/41%20Children%20Watching%20Bears.jpg?itok=fgFtK6OO)
Children Watching Bears