Lignophagia

[1] It has been recorded in several species, but perhaps most commonly in horses where it is usually called, simply, "wood chewing".

Lignophagia is a form of the pica disorder, in which normally non-nutritive substances are chewed or eaten.

[3] Both cribbing and wood chewing can cause excessive wearing and deterioration of the teeth in severe cases.

[6] Wood chewing also is destructive to barns and fences, sometimes requiring costly repairs and ongoing maintenance.

[7] A potential cause for lignophagia in dogs is being confined in an area with wet wood and having a diet lacking in proper nutrition.