Sayyiduna Thabit bin Wadi'ah (may Allah be pleased with him) says that a lizard (dabb) was brought to the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) said: "It is from the nations that were transformed, and Allah knows best."
(b) In the narration of Ubaydullah: A lizard was brought before the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) said: "It is from a transformed nation; Allah knows best."
Al-Bukhari said: The hadith of Thabit bin Wadi'ah is more authentic, and there is reservation (nazar) about the hadith itself.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19425