Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Keyword: Henry Vilas Zoo

Hourglass treefrog tadpoles (Dendropsophus or Hyla ebracatta) that are a month old at Henry Vilas Zoo in Madison, WI.

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Hourglass treefrog tadpoles (Dendropsophus or Hyla ebracatta) that are a month old at Henry Vilas Zoo in Madison, WI.

Hourglass treefrog tadpoles (Dendropsophus or Hyla ebracatta) that are a month old at Henry Vilas Zoo in Madison, WI.

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Hourglass treefrog tadpoles (Dendropsophus or Hyla ebracatta) that are a month old at Henry Vilas Zoo in Madison, WI.

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Reticulated glass frog or La Palma glass frog (Hyalinobatrachium Valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Reticulated glass frog or La Palma glass frog (Hyalinobatrachium Valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Reticulated glass frog or La Palma glass frog (Hyalinobatrachium Valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Reticulated glass frog or La Palma glass frog (Hyalinobatrachium Valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Reticulated glass frog or La Palma glass frog (Hyalinobatrachium Valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Reticulated glass frog or La Palma glass frog (Hyalinobatrachium Valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Reticulated glass frog or La Palma glass frog (Hyalinobatrachium valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Reticulated glass frog or La Palma glass frog (Hyalinobatrachium valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Reticulated glass frog or La Palma glass frog (Hyalinobatrachium valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Reticulated glass frog or La Palma glass frog (Hyalinobatrachium valerioi) a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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ANI071-00002

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

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ANI071-00001

Grainy Cochran frog (Cochranella granulosa), a species of glass frog, at Henry Vilas Zoo in Madison, WI.

Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

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Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

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Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

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Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

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Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

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Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

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Sanguine poison dart frog, Epipedobates zaparo, at Henry Vilas Zoo in Madison, WI.

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