It is narrated from Sayyiduna Thabit bin Wadi'ah (may Allah be pleased with him) that a dabb (a kind of lizard-like animal) was brought to the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) said: "This is a nation that was transformed (into animals), and Allah knows best."
Hadith Referenceالمعجم الكبير للطبراني / باب الثاء / 1350