Rhinoceros at the Oregon Zoo, in Washington Park, Portland, Oregon
Members of the rhinoceros family are some of the largest remaining megafauna, with all species able to reach or exceed one tonne in weight. They have a herbivorous diet, small brains (400-600 g) for mammals of their size, one or two horns, and a thick (1.5-5 cm) protective skin formed from layers of collagen positioned in a lattice structure. They generally eat leafy material, although their ability to ferment food in their hindgut allows them to subsist on more fibrous plant matter when necessary. Unlike other perissodactyls, the two African species of rhinoceros lack teeth at the front of their mouths, instead relying instead on their lips to pluck food. [from wikipedia]
Oregon_Zoo_Portland_Oregon_20171110_135606_T17_7025.jpg

Hidden
(1 of 6) (1929 views)

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(Date Photographed: 13:56:06 Friday 10 November 2017)
(Date Published: Monday 8 January 2017)
© 2017 Terry Costales
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A rhinoceros hid its face and horn behind a stone wall.


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Rhinoceros Enclosure
(2 of 6) (1311 views)

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at Oregon Zoo external link
in Washington Park external link
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(Date Photographed: 13:56:20 Friday 10 November 2017)
(Date Published: Monday 8 January 2017)
© 2017 Bryan Costales
Creative Commons Attribution-NonCommercial License
#C17_6163


The rhinoceros enclosure was well appointed with stones and posts to keep the rhinoceros interested.


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Rhinoceros Rested
(3 of 6) (1307 views)

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at Oregon Zoo external link
in Washington Park external link
Portland, Oregon external link
(Date Photographed: 13:56:26 Friday 10 November 2017)
(Date Published: Monday 8 January 2017)
© 2017 Bryan Costales
Creative Commons Attribution-NonCommercial License
#C17_6164


A rhinoceros lay on hay under the shade of a cave.


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Blend In
(4 of 6) (1335 views)

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at Oregon Zoo external link
in Washington Park external link
Portland, Oregon external link
(Date Photographed: 13:56:43 Friday 10 November 2017)
(Date Published: Monday 8 January 2017)
© 2017 Terry Costales
Creative Commons Attribution-NonCommercial License
#T17_7028


A rhinoceros rubbed its horn on a stone face, presumably to sharpen it. Or, the rhinoceros attempted to blend in with the color and texture of the stone.


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In Repose
(5 of 6) (1305 views)

Rhinoceros external link
at Oregon Zoo external link
in Washington Park external link
Portland, Oregon external link
(Date Photographed: 13:56:59 Friday 10 November 2017)
(Date Published: Monday 8 January 2017)
© 2017 Terry Costales
Creative Commons Attribution-NonCommercial License
#T17_7028


A rhinoceros laid down to rest. Its eye barely open, it looked remarkably comfortable.


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Surrounded By Green
(6 of 6) (1552 views)

Rhinoceros external link
at Oregon Zoo external link
in Washington Park external link
Portland, Oregon external link
(Date Photographed: 13:57:22 Friday 10 November 2017)
(Date Published: Monday 8 January 2017)
© 2017 Bryan Costales
Creative Commons Attribution-NonCommercial License
#C17_6166


The rhinoceros enclosure was surrounded by greenery. The visual effect was designed to make the two rhinoceroses comfortable.


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