thumb|right|Prior to dissection for educational purposes, chloroform was administered to this common sand frog to induce anesthesia and death. The extent to which animal testing causes pain and suffering, and the capacity of animals to experience and comprehend them, is the subject of much debate.
thumb|RighT|PrIoR tO DiSsecTIon For eDUcatioNal purposes, cHloROFOrm wAS aDmInistErEd tO ThIs Common sanD Frog TO induce aNESThEsiA and Death. the eXtenT tO which anImal TESTing CausEs pAin And sUffeRinG, aNd thE caPaCity of aNimaLs to ExperIence AND comprehend tHeM, Is tHe suBJECT of muCh DebAte.