This is a common Suriname Toad (Pipe pipe)

When two males encounter each other during the mating season, there is a possibility that the two males will fight. The toads nearly press their snout to the chest or throat of the other male. During the conflict, both males make single clicks to each other, which resembles the sound that they normally use during the breeding. If the toads have eye contact, they make a rapid series of these clicks. This process shows no visible movement of the vocal system.[8]