Hasan al-Basri (may Allah have mercy on him) says that I once presented myself before Sayyiduna Uthman (may Allah be pleased with him), and he was, in his sermon, commanding the killing of dogs and the slaughtering of pigeons.
Hadith Referenceمسند احمد / مسند الخلفاء الراشدين / 521
Hadith Gradingحکم دارالسلام:إسناده ضعيف لضعف مبارك بن فضالة