At temperate and boreal latitudes, seasonal transitions drive large fluxes in resource availability. For both terrestrial and aquatic predators, seasonal resource pulses have the capacity to shape physiological and ecological strategies. However, our ability to detect seasonally dynamic trophic interactions is limited by the logistical difficulty of year-round monitoring. Here, we document a novel, terrestrial resource pulse to a freshwater predator across multiple lakes and years: breeding spotted salamander (Ambystoma maculatum) consumption by brook trout (Salvelinus fontinalis). Better understanding the prevalence and impacts of fish preying on adult amphibians will better inform both amphibian conservation and fisheries management moving forward. Photo 1: The brook trout (Salvelinus fontinalis) is a sensitive cold-water fish species that exhibits massive morphological and ecological diversity across their native and introduced ranges. As a result, this species is able to inhabit a vast array of aquatic habitats, from trickling headwater streams to large coastal rivers. Photo credit: Timothy Fernandes. Photo 2: Though spotted salamanders (Ambystoma maculatum) breed predominantly in ephemeral pools and small ponds, many populations in Algonquin Park (Ontario, Canada) appear to utilize headwater lakes. Photo credit: Timothy Fernandes.