The animal known for having a proboscis is the elephant, specifically the Asian and African elephants. Their proboscis is an elongated trunk, which serves various functions, including feeding, drinking, and social interactions. The trunk is a highly versatile tool that allows elephants to grasp food, suck up water, and even communicate with each other through touch and sound. Additionally, the proboscis contains many muscle groups, making it incredibly dexterous; elephants can use it to pick up small objects or even spray dust on themselves. This remarkable adaptation is essential to their survival in diverse environments.