Frog and Toad Pictures

An endangered Blue Jeans Dart Frog, Dendrobates pumilio, rests on a leaf at the INBIO Park in Heredia, Costa Rica, Wednesday, May 28, 2008. Scientists believe the decline in tropical frogs is related to global warming. The presidents of Mexico, Central American and the Caribbean are meeting in Honduras in a regional summit on climate change. (AP Photo/Kent Gilbert)

AP

An endangered Blue Jeans Dart Frog, Dendrobates pumilio, rests on a leaf at the INBIO Park in Heredia, Costa Rica, Wednesday, May 28, 2008. Scientists believe the decline in tropical frogs is related to global warming. The presidents of Mexico, Central American and the Caribbean are meeting in Honduras in a regional summit on climate change. (AP Photo/Kent Gilbert)

AP

An endangered Green Poison Dart frog, Dendrobates auratus, rests on a leaf at the INBIO Park in Heredia, Costa Rica, Wednesday, May 28, 2008. Scientists believe the decline in tropical frogs is related to global warming. The presidents of Mexico, Central American and the Caribbean are meeting in Honduras in a regional summit on climate change. (AP Photo/Kent Gilbert)

AP

An endangered Red Eyed Tree frog, Agalychnis Callidryas, rest on a leaf at the INBIO Park in Heredia, Costa Rica, Wednesday, May 28, 2008. Scientists believe the decline in tropical frogs is related to global warming. The presidents of Mexico, Central American and the Caribbean are meeting in Honduras in a regional summit on climate change. (AP Photo/Kent Gilbert)

AP

LONDON - MAY 27: A visitor to the Hayward smells the installation 'Life fog frog ...Fog frog, 2008', which smells of spices and was created by Ernesto Neto, on May 27, 2008 in London, England. 'Psycho Buildings, Artists Take on Architecture' marks the Hayward Gallery's 40th anniversary, exhibiting installations of ten international artists from May 28 to August 25, 2008. (Photo by Cate Gillon/Getty Images)

Getty Images

A fossil remains of Gerobatrachus hottoni is pictured in this undated photo. The discovery of a "frogamander," a 290 million-year-old fossil that links modern frogs and salamanders, may resolve a longstanding debate about amphibian ancestry, Canadian scientists said on May 21, 2008. Gerobatrachus means elderly frog in Greek. REUTERS/Diane Scott/University of Calgary/Handout (CANADA). NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.

Reuters

An undated artist rendition of Gerobatrachus hottoni. The discovery of a "frogamander," a 290 million-year-old fossil that links modern frogs and salamanders, may resolve a longstanding debate about amphibian ancestry, Canadian scientists said on May 21, 2008. Gerobatrachus means elderly frog in Greek. REUTERS/Michael Skrepnick/University of Calgary/Handout (CANADA). NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.

Reuters

A frog clings to rice stalks at a paddy field in Minami-Uonuma, north of Tokyo October 18, 2007. Shoppers in Japan will likely pay around 20 percent more for rice than a year ago in the coming months, industry sources say, after a price stabilisation scheme went awry, boosting inflation just as the central bank is worrying about the rising cost of food and other essentials. Picture taken October 18, 2007. REUTERS/Toru Hanai (JAPAN)

Reuters

Isaac Gettinger, 3, of Portland, Ore., watches a golden poison frog on exhibit at the Museum of Discovery and Science during a preview Tuesday, May 20, 2008 in Fort Lauderdale, Fla. The traveling exhibit which runs from May 22 to Sept. 7, features an assortment of exotic live frogs from around the world. (AP Photo/Wilfredo Lee)

AP

Frog keeper Kristin Szwajkowski holds a smooth-sided toad on exhibit at the Museum of Discovery and Science during a preview Tuesday, May 20, 2008 in Fort Lauderdale, Fla. The traveling exhibit which runs from May 22 to Sept. 7, features an assortment of exotic live frogs from around the world. (AP Photo/Wilfredo Lee)

AP