Which animal trumpets?

An elephant trumpets. Elephants produce several sounds, usually through the larynx, though some may be modified by the trunk. Perhaps the most well-known call is the trumpet which is made by blowing through the trunk. Trumpeting is made during excitement, distress or aggression. Fighting elephants may roar or squeal, and wounded ones may bellow.

Rumbles are produced during mild arousal and some appear to be infrasonic. Infrasonic calls are important, particularly for long-distance communication, in both Asian and African elephants. Elephants are known to communicate with seismics, vibrations produced by impacts on the earth's surface or acoustical waves that travel through it.