How do snakes climb?

Snakes have nei­ther arms nor legs, so how do they climb trees?

Science Illustrated - - ASK US -

On the ground, they wrig­gle for­wards by means of ob­long scales on their bel­lies. Known as ven­tral plates, the scales en­sure some grip, when they climb trees. Some species such as corn snakes can con­trol their belly scales, so the un­der­side gets more folds, stand­ing more firmly on any ir­reg­u­lar­i­ties. Corn snakes can climb ver­ti­cal tree trunks

As snakes move from branch to branch, they use a har­mon­ica mo­tion. First, the snake gets a good grip by "wrap­ping" the front of its body around a branch or trunk. Sub­se­quently, it pulls up its tail, and the hind part of its body gets a grip, push­ing the forepart for­wards.

Snakes are very cau­tious, when they climb. Their grip is much harder than it needs to be – prob­a­bly to make sure that they do not fall down and be­come an easy prey for en­e­mies – and to avoid con­sum­ing en­ergy for climb­ing up again.

Snakes use scales on their stom­achs to hold on to the sur­face.

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