Dave Watts / Female Western grey kangaroo (Macropus fuliginosus) rolling with a large joey in her pouch, Kangaroo Island, South Australia.
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Dave Watts / Female Tamar wallaby (Macropus eugenii) grazing with a joey in her pouch, Kangaroo Island, South Australia.
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Edwin Giesbers / RF - European hamster (Cricetus cricetus) with cheek pouches full, Austria. (This image may be licensed either as rights managed or royalty free.)
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Ole Jorgen Liodden / Magnificent frigatebird (Fregata magnificens) male with gular pouch, Galapagos.
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Ole Jorgen Liodden / Brown pelican (Pelecanus occidentalis urinator) close up of throat pouch skin, with beak open, Galapagos.
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Bence Mate / Dalmatian pelicans (Pelecanus crispus) low angle perspective of open bills, Lake Kerkini, Greece, February. Highly Commended, 2011 Wildlife Photographer of the Year competition.
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John Cancalosi / Golden-mantled ground squirrel (Spermophilus lateralis) with very full cheek pouches. Montana, USA, Oct 2010
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Eric Baccega / Siamang Gibbon (Hylobates syndactylus) vocalising, vocal pouch inflated, captive, native to forests of Malaysia, Sumatra and Thailand
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Mary McDonald / Bannertail kangaroo rat eating. (Dipodomys spectabilis) Arizona USA Full pouches
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Steven David Miller / Eastern grey kangaroo (Macropus giganteus) female with joey in pouch. Grampians National Park, Victoria, December.
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Steven David Miller / Agile wallaby (Macropus agilis) female and joey standing side by side. Pouch visible on female. Nitmiluk National Park, Northern Territory, Australia.
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Steven David Miller / Agile wallaby (Macropus agilis) female cleaning herself with joey squeezed into pouch. Nitmiluk National Park, Northern Territory, Australia.