Scott No.: 656
Date of Issue: January 30, 1972
Folk engravings of Dong Ho, "Frog School." According to the Fount of All Knowledge (Wikipedia), Dong Ho is a school of folk painting that originated in the village of Dong Ho and was essential to the celebration of the Tet holiday. A picture of the "frog allegory" can be found here.
Scott No.: 2275
Species: Yellow-banded Poison-dart Frog (Dendrobates leucomelas)
Scott No.: 2276
Species: Edible Frog (Rana esculenta)
Scott No.: 2277
Species: Golden Mantella (Mantella aurantiaca)
Scott No.: 2275-2281
Date of Issue: June 12, 1991
Series: WWF Frogs
Scott No.: 2278
Species: Dyeing Poison Dart Frog (Dendrobates tinctorius)
Scott No.: 2279
Species: Hallowell's Tree Frog (Hyla halowelli)
Scott No.: 2280
Species: Red-eyed Tree Frog (Agalychnis callidryas)
Scott No.: 2281
Species: Golden Tree Frog (Hyla aurea)
Scott No: 3494
Species: Peur Tree Frog (Rhacophorus puerensis)
Scott No.: 3495
Species: Annam Flying Frog (Rhacophorus annamensis)
Scott No.: 3406
Species: Robert Inger's Tree Frog (Rhacophorus robertingeri)
Scott No: 3494-2498
Date of Issue: April 1, 2014
Set: Amphibious Animals, Frogs
See also: First Day Covers
Scott No: 3497
Species: Black-webbed Tree Frog (Rhacophorus kio)
Scott No.: 3498
Species: Red-webbed Tree Frog (Rhacophorus rhodopus)
Scott No.:
Date of Issue: November 14, 2020
Unfortunate situation: Frog in beak of Blyth's Kingfisher (Alcedo hercules)