▁to xic ▁subst ances ▁in ▁the ▁environment , ▁sometimes ▁trem at odes . ▁Therefore , ▁the ▁health ▁of ▁these ▁fro gs ▁are ▁valuable ▁in ▁determ ining ▁the ▁health ▁of ▁e cos ystem s ▁and ▁whether ▁agricult ural ▁practices ▁have ▁le aked ▁any ▁p estic ides , ▁her b ic ides , ▁or ▁fert il izers ▁into ▁the ▁environment . ▁In ▁addition , ▁these ▁fro gs ▁are ▁excellent ▁in ▁cont rolling ▁insect ▁populations , ▁thus ▁further ▁benef iting ▁humans ▁and ▁the ▁environment . ▁ ▁References ▁▁▁▁ ▁Database ▁entry ▁includes ▁a ▁range ▁map ▁and ▁just ification ▁for ▁why ▁this ▁species ▁is ▁of ▁least ▁concern . ▁IU CN ▁Range Map : ▁Pseud ac ris ▁tr iser i ata ▁Animal ▁D iversity ▁Web : ▁Pseud ac ris ▁tr iser i ata ▁Illinois ▁Natural ▁History ▁Survey : ▁Pseud ac ris ▁tr iser i ata ▁Am ph ib ian ▁Species ▁of ▁the ▁World : ▁Pseud ac ris ▁tr iser i ata ▁Pet erson ▁Field ▁Guide ▁– ▁Western ▁Re pt iles ▁and ▁Am ph ib ians ▁– ▁ 3 rd ▁Edition . ▁P ough , ▁F . H . ▁Her pet ology ▁– ▁Third ▁Edition . ▁Upper ▁S addle ▁River , ▁N J : ▁Pear son ▁Education , ▁ 2 0 0 4 . ▁Print . ▁Environment al ▁Education ▁of ▁K ids : ▁Western ▁Ch orus ▁F rog ▁Western ▁Ch orus ▁F rog ▁Fro gs ▁Field ▁ID ’ s ▁- ▁University ▁of ▁Wisconsin ▁Sea ▁Grant : ▁The ▁Western ▁Ch orus ▁F rog ▁ ▁e N ature . com : ▁Western