Yes, some species of snakes are capable of climbing walls. Tree-dwelling snakes, such as some species of tree boas and pythons, are known to climb trees and other vertical surfaces using specialized scales on their undersides. These scales, called "ventral scales," are larger and more numerous than the scales on other parts of the snake's body, allowing them to grip onto surfaces more effectively.
Other species of snakes, such as the Asian vine snake, are also known for their climbing ability. These snakes use a combination of muscle strength and flexible bodies to climb up trees, poles, and other vertical surfaces.
It's important to note that not all snakes are capable of climbing walls or other vertical surfaces, and even among those that can, their abilities may vary depending on the species and the individual snake's size and strength