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Celebrating 50 Years of Conservation Science
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NOTES FROM THE FIELD | 2025 | No. 1
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Sometimes called “the last wild horse,” Przewalski’s
horses once
galloped across grassy plains throughout Asia and Europe. Although they
unfortunately became extinct in the wild by the 1960s, they made a
comeback thanks to conservation breeding efforts and began to thrive in
native habitats again. However, the existing population still faced
major challenges due to a lack of genetic diversity.
New hope for their future waited thousands of miles away, in an unlikely
place—the cells of a Przewalski’s horse stallion that lived 40 years ago
and whose DNA was not represented in the current population. Preserved
in our Wildlife Biodiversity Bank’s Frozen
Zoo®,
those living cells made
possible the births of Kurt and Ollie, the world’s first and second
clones of this critically endangered species and the key to restoring
crucial genetic diversity.
That is just one example of the limitless hope the Frozen Zoo
represents. This year, we’re marking the 50th anniversary of our
conservation science efforts and the Wildlife
Biodiversity Bank. Our
Frozen Zoo is the most extensive biobank of its kind and holds vital
genetic resources that can be applied to wildlife health, care,
education, and conservation needs, with potential to cure disease,
address conservation challenges, and save endangered species. You make
cutting-edge conservation science breakthroughs like these
possible.
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HOW BIG IS A CELL?
Cells vary in shape, function, and size. Some are enormous—the ostrich
egg is the largest single cell in the animal kingdom, averaging six
inches long and weighing about three pounds—but most cells can only be
seen with the help of a microscope. Let’s zoom in and see how other
cells measure up.
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CONSERVATION IN BLACK AND WHITE
Nearly 300,000 people from around the world watched Xin
Bao and Yun
Chuan exploring their Panda Ridge habitats on the day the San
Diego
Zoo’s new Giant
Panda Cam launched. You can go online and “visit” the
pandas from anywhere—but after marveling at their latest adventures,
you’ll definitely want to see them in person at Panda
Ridge.
As an ally for wildlife, you make historic moments in conservation
happen. Your support is helping save, protect, and care for giant
pandas
and other wildlife worldwide.
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WILD WEEKEND: ASIA
AND LUNAR NEW YEAR
Join us for Lunar New Year celebrations and Wild Weekend: Asia at the
San
Diego Zoo and the San
Diego Zoo Safari Park from February
1–2. Discover fun activities for the whole family, enjoy
incredible experiences with our team of conservationists, and find out
more about
the iconic species you’re helping protect through our Asia
Conservation Hub.
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WILDLIFE HEROES
CHANGE
THE WORLD.
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John, your
ongoing support makes a
lifesaving difference for
vulnerable wildlife. As a
Wildlife Hero, your monthly
gift will take us further as
we work together to advance
conservation science, making
a brighter future possible
for threatened species
including Przewalski’s
horses, northern white
rhinos, and countless
others. And as a Wildlife
Hero, you’ll bring hope to
the extraordinary wildlife
relying on us to thrive—and
survive—each and every day.
You make it all possible,
and we’re forever grateful
for you.
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Your monthly gift
will make a world of
difference for
wildlife.
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Your support saves wildlife.
San Diego Zoo Wildlife Alliance is an international conservation
nonprofit and a
registered 501(c)(3) organization. Tax ID# 95-1648219.
With more than 100 years of wildlife care expertise and partnerships
around the
globe, we are saving, protecting, and caring for species worldwide.
Follow along on our mission to save wildlife
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San Diego Zoo Wildlife Alliance.
Photo Credit | Rio The Photographer
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