Enables fumarylacetoacetase activity. Acts upstream of or within arginine catabolic process. Is expressed in several structures, including alimentary system; central nervous system; eye; genitourinary system; and skeleton. Used to study tyrosinemia type I. Human ortholog(s) of this gene implicated in tyrosinemia type I. Orthologous to human FAH (fumarylacetoacetate hydrolase). [provided by Alliance of Genome Resources, Apr 2022]