It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) forbade the killing of four living creatures: the ant, the honeybee, the hoopoe, and the shrike.
Hadith Takhrij«اسناده صحيح علي شرط الشيخين۔ أخرجه ابوداود: 5267، وابن ماجه: 3224 ، (انظر مسند أحمد ترقيم الرسالة: 3066 ترقیم بيت الأفكار الدولية: 3066»
Narrated from Sayyiduna Abdur Rahman bin Uthman (may Allah be pleased with him) that a physician mentioned to the Messenger of Allah (peace and blessings be upon him) a medicine in which he used to mix frog, but the Prophet (peace and blessings be upon him) forbade killing the frog.