Spiders do not have tongues in the conventional sense, but they do have mouths that function in ways similar to humans. They can drink water, as well as swallow liquid prey. These functions are performed through special enzymes and the movement of the stomach. There are several other structures in the mouth that are used to process food.
The two main types of digestive systems in spiders are the labium and the hypopharynx. The labium is located on the bottom floor of the mouth, and helps to move food from the mouth to the body. It is not designed to help with chewing, but it does play a crucial role in helping the food move forward.
Another part of the mouth is the chelicerae. Chelicerae look like fangs, and they are attached to the venom glands. Some spiders use them to macerate food.
Spiders are also able to taste and smell foods. Chemical detectors help them determine whether or not a meal is good. They also have taste-sensitive hairs on their legs. This sensory capability is useful when hunting.
Spiders are in the order Araneae. Other creatures in this group, such as crustaceans, sea stars, and ants, do not have tongues. However, ants do have finger-like palps around the mouth.
Most spiders have a straw-shaped mouth. The front teeth are used to grab and crush prey. While some species can bite, others cannot. In addition, some spiders have large fangs to macerate prey.