It wasnarrated that Abu Sa'eed Al-Khudri said:
"We bought a ram forsacrifice, then a wolf tore some flesh from its rump and ears. Weasked the Prophet (ﷺ) and he told us to offer it as a sacrifice." (PT)
English reference (PT): Vol. 4, Book 26, Hadith 3146 (PT)
Arabic reference (PT): Book 26, Hadith 3266 (PT)