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Rallus philipensis and Rallus dieffenbachii

Rallus philipensis and Rallus dieffenbachii (1873)

John Gerrard Keulemans (Dutch, 1842-1912)
Ram

Ram (1845-1850)

Rosa Bonheur (French, 1822-1899)
Ram, Ewe and Kid

Ram, Ewe and Kid (17th century)

Marcus de Bye (Dutch, 1638-1688)
Ramphomicron microrhyncha (Small-billed Thornbill)

Ramphomicron microrhyncha (Small-billed Thornbill)

John Gould (English, 1804-1881)
Rams with ruins in the background

Rams with ruins in the background

Philipp Peter Roos (German, 1657-1706)
Rana Aquatica, The Water-Frog; Sarracena.

Rana Aquatica, The Water-Frog; Sarracena. (1754)

Mark Catesby (English, 1683 – 1749)
Rana clamitans

Rana clamitans (1842)

John Edwards Holbrook (American, 1796 – 1871)
Rana esculenta, Rana esculenta ridibunda, Hyla arborea

Rana esculenta, Rana esculenta ridibunda, Hyla arborea (1897)

Bruno Dürigen (German, 1853–1930)
Rana fontinalis

Rana fontinalis (1842)

John Edwards Holbrook (American, 1796 – 1871)
Rana halecina

Rana halecina (1842)

John Edwards Holbrook (American, 1796 – 1871)
Rana horiconensis

Rana horiconensis (1842)

John Edwards Holbrook (American, 1796 – 1871)
Rana maxima, The Bull-Frog; Helleborena, The Lady’s Slipper of Pennsylvania.

Rana maxima, The Bull-Frog; Helleborena, The Lady’s Slipper of Pennsylvania. (1754)

Mark Catesby (English, 1683 – 1749)
Rana moluccana,Hyla kampeni Barbour,Cornufer corrugatus rubristriatus Barbour

Rana moluccana,Hyla kampeni Barbour,Cornufer corrugatus rubristriatus Barbour (1912)

Thomas Barbour (American, 1884 – 1946)
Rana palustris

Rana palustris (1842)

John Edwards Holbrook (American, 1796 – 1871)
Rana sylvatica

Rana sylvatica (1842)

John Edwards Holbrook (American, 1796 – 1871)
Rana Terrestris, The Land-Frog; Sarracena.

Rana Terrestris, The Land-Frog; Sarracena. (1754)

Mark Catesby (English, 1683 – 1749)
Rana viridis arborea, The Green-Tree Frog; Arum Americanum, The Scunk Weed.

Rana viridis arborea, The Green-Tree Frog; Arum Americanum, The Scunk Weed. (1754)

Mark Catesby (English, 1683 – 1749)
Ranger, a setter, the property of Elizabeth Gray

Ranger, a setter, the property of Elizabeth Gray (1797)

George Garrard (English, 1760-​1826)
Ransuil (Asio otus) uijl. Bubo. hibou

Ransuil (Asio otus) uijl. Bubo. hibou (1596-1610)

Anselmus Boëtius de Boodt (Flemish, 1550 - 1632)
Rappe

Rappe (1902)

Emil Volkers (German, 1831-1905)
Rappe in einem Stall

Rappe in einem Stall

Emil Volkers (German, 1831-1905)
Rappe in Landschaft

Rappe in Landschaft (1886)

Emil Volkers (German, 1831-1905)
Rappenantilope

Rappenantilope (1912)

Wilhelm Kuhnert (German, 1865-1926)
Rascasses et homards dans un aquarium

Rascasses et homards dans un aquarium (1909)

Theo van Rysselberghe (Belgian, 1862-1926)
Rast der Kuhherde

Rast der Kuhherde (1873)

Friedrich Voltz (German, 1817-1886)
Rast Des Hirtenjungen

Rast Des Hirtenjungen

Hans Haag (Austrian, 1841 - 1919)
Rast des Hirtenjungen mit seinen Tieren

Rast des Hirtenjungen mit seinen Tieren (1866)

Otto Gebler (German, 1838-1917)
Rastende Kühe auf der Weide

Rastende Kühe auf der Weide

Friedrich Voltz (German, 1817-1886)
Rathbone warbler

Rathbone warbler (1827–1838)

John James Audubon (American, 1785-1851)
Rats amongst the Barley Sheaves

Rats amongst the Barley Sheaves (1851)

Thomas Hewes Hinckley (American, 1813-1896)