Frogs And Toads On Stamps, Covers And Postmarks.

Australia
Wildlife Recovery
August 4, 2020
Set of six, one stamp depicts Davies' Tree Frog (Litoria daviesae).

Frogs and Toads, issued by Zambia on January 25, 1989:

Red Toad (Bufo carens):

Puddle Frog (Phrynobatrachus natalensis):

Marbled Reed Frog (Hyperolius marmoratus):

Young Reeds Frogs (Hyperolius marmoratus):

Belgium
Visitors to the Garden
August 31, 2020
Set of ten, one stamp depicts a green frog.

Hondarus
Rio Platano Biosphere
September 24, 2019
Set of four, one stamp depicts Red-Eyed Tree Frog (Agalychnis callidryas).

South Africa
Endangered Frogs
October 8, 2020
The stamp set depicts Rose Mountain Toad (Capensibufo rosei), Northern Moss Frog (Arthroleptella subvoce), Table Mountain Ghost Frog (Heleophryne rosei), Rough Moss Frog (Arthroleptella rugosa).

Frogs of South Africa - June 23, 2000:

El Salvador
Fauna - Frogs
May 29, 1991
25c: Smilisca baudinii
70c: Eleutherodactylus rugulosus
C1.00: Plectrohyla guatemalensis
C1.50: Agalychnis moreletii

On January 21, 2001 Ireland issued a "Greetings" booklet and minisheet with the theme "cool pets". The booklet contains ten, 30p/38c self-adhesive stamps of five different designs, and the minisheet contains one each of three 30p/38c stamps of 3 of the same designs used for the booklet, but with water-activated gum, and in slightly different colors. Here are the two frog stamps (self-adhesive: Hib #C1070, water-activated: Hib #C1075) from the two formats.

A frog is shown on French Guiana's June 2, 1947 series of ten postage due stamps. Here is the 10 centimes value (Sc #J22) from this set.