The bullfrog, Rana catesbeiana, has been reported to consume a wide array of terrestrial and aquatic organisms. Diet varies with body size, time of the year, and habitat (Brook, 1964; Fulk and Whitaker, 1968; Smith, 1973), and usually reflects the local availability and abundance of potential prey (Korschgen and Baskett, 1963). Where the diversity of prey species is low, such as in the muddy farm ponds of central Oklahoma, the bullfrog consumes relatively few kinds of organisms (McCoy, 1969). Many studies on bullfrogs have revealed that vertebrates constitute a significant portion of their diet, especially of larger frogs (Frost, 1935; Smith, 1973). Bullfrogs readily consume tadpoles, other adult frogs of the genus Rana, and smaller conspecifics when available (Cohen and Howard, 1958; Kirn, 1949; Korschgen and Moyle, 1955; Perez, 1951). In spite of the considerable literature dealing with the diet of Rana catesbeiana, there appears to be no record of opportunistic scavenging by this euryphagous predator. At approximately 2300 h (CDST) on 30 August 1982 I observed ajuvenile bullfrog (KU 192470-56 mm SVL) ingesting an immature plains leopard frog, Rana blairi (KU 192469-45 mm SVL), in the middle of a gravel road bordered by flooded fields, 8 km NNE of Lawrence, Douglas County, Kansas. The entire body of the leopard frog had been engulfed, leaving only the legs protruding from the bullfrog's mouth. The leopard frog was promptly regurgitated when the bullfrog was captured. Close inspection revealed that the leopard frog had recently been crushed by a passing vehicle; the body was mangled, several bones were broken, the skin was torn, and viscera protruded from the mouth and abdominal region. In addition, pieces of gravel had been ground into the carcass. Since there was no evidence of putrefaction, the leopard frog must have been crushed sometime earlier in the evening, and its extremely mangled condition strongly suggests that it was dead before the bullfrog began consuming it. This observation appears to be the first record of opportunistic scavenging by a bullfrog. The possibility that involuntary muscle movements of the dead leopard frog may have triggered a feeding response of the bullfrog cannot be ruled out. Smith (1973) observed bullfrogs consuming small grapes that fell onto the surface of the water and indicated that movement might be responsible for eliciting a feeding response. Smith (1977) discovered that bullfrogs at his