In the United States some US States have designated Amphibians as state symbols.  Not all 50 states have State Amphibians.  Generally states that designate Amphibians as a state symbol do so out of tradition or the state legislature has done so due to the amphibian being special to their state.

Alabama State Amphibian - Red Hills Salamander ~Phaeognathus hubrichti Arizona State Amphibian - Arizona Tree Frog ~Hyla eximia Colorado State Amphibian - Western Tiger Salamander ~Ambystoma mavortium Georgia State Amphibian - American Green Tree Frog ~Hyla cinerea Illinois State Amphibian - Eastern Tiger Salamander ~Ambystoma tigrinum Iowa State Amphibian - North American Bullfrog ~Rana catesbeiana Kansas State Amphibian - Barred Tiger Salamander ~Ambystoma mavortium Louisiana State Amphibian - American Green Tree Frog ~Hyla cinerea Minnesota State Amphibian - Northern Leopard Frog ~Rana pipiens Missouri State Amphibian - North American Bullfrog ~Rana catesbeiana New Hampshire State Amphibian - Red-spotted Newt ~Notophthalmus viridescens New Mexico State Amphibian - New Mexico Spadefoot Toad ~Spea multiplicata New York State Amphibian - Wood Frog ~Lithobates sylvaticus Ohio State Amphibian - Spotted Salamander ~Ambystoma maculatum Oklahoma State Amphibian - North American Bullfrog ~Rana catesbeiana South Carolina State Amphibian - Spotted Salamander ~Ambystoma maculatum Tennessee State Amphibian - Tennessee Cave Salamander ~Gyrinophilus palleucus Texas State Amphibian - Texas Toad ~Bufo speciosus Washington State Amphibian - Pacific Tree Frog ~Pseudacris regilla