The jackal-wolf hybrid is a canid hybrid resulting from a union between a gray wolf and a golden jackal. Although hybridization between wolves and golden jackals has never been observed, evidence of such occurrences was discovered through mtDNA analysis on jackals in Senegal and Bulgaria. Although there is no genetic evidence of gray wolf-jackal hybridization in the Caucasus Mountains, there have been cases where otherwise genetically pure golden jackals have displayed remarkably gray wolf-like phenotypes, to the point of being mistaken for wolves by trained biologists.
^Moura, Andre E., et al (2013). "Unregulated hunting and genetic recovery from a severe population decline: the cautionary case of Bulgarian wolves". Conservation Genetics14. doi:10.1007/s10592-013-0547-y.