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John Valk: Pantser krokodil
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John Valk: Witkruinmangabey, White Crowned Mangabay
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John Valk: Pelicaan
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John Valk: Amour panter
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John Valk: Bengaalse Oehoe
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John Valk: Blijdorp
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John Valk: Aalscholver
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John Valk: Okapi
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John Valk: Kaapse klipdas/Rockdassie
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John Valk: Blijdorp
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John Valk: Giraffe
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John Valk: Giraffes
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John Valk: Giraffe
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John Valk: Koedoe
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John Valk: Blijdorp
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John Valk: Witkruinmangabey, White Crowned Mangabay
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John Valk: Secretarisvogel
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John Valk: Mhorrgazelle
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John Valk: Aziatische leeuw
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John Valk: Vicuña
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John Valk: IJsbeer
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John Valk: Blijdorp zoo
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John Valk: Belangers Toepaja
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John Valk: Ooievaar