Caption: Oregon spotted frog (Rana pretiosa)
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 21.42 MB

Caption: Leopard frog (Rana pipiens)
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 15.35 MB

Caption: Wood frog (Lithobates sylvatica)
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 16.59 MB

Caption: Pickerel frog (Lithobates palustris)
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.89 MB

Caption: Bullfrog (Lithobates catesbeianus)
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 12.54 MB

Caption: Metamorphosis of leopard frog from egg, to tadpole, to adult
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 6.90 MB