大致观点是，唾液里面有一些天然的消毒成分，同时舔舐伤口可以去掉伤口表面的尘土以及病原体。但是舔舐太多可能会引起感染影响伤口愈合。维基百科：唾液一种常见的说法认为唾液里含有天然的消毒成分，因此人们相信在受伤后舔舐伤口对复原有帮助。佛罗里达大学的研究者发现老鼠的唾液中含有一种名为神经生长因子（NGF）的蛋白质。涂上NGF的伤口要比不做处理的伤口恢复快两倍；因此某些物种的唾液确实有帮助伤口恢复的功效。虽然至今仍未有证据显示舔舐伤口可以消毒，不过在舔舐的过程中一些较大的污染物如灰尘以及病原体可被唾液直接冲走。因此在没有水或其他消毒剂的情况下舔舐仍不失为清洁伤口的好方法。以及英文维基百科：Wound lickingIt has been long observed that the licking of their wounds by dogs might be beneficial. Indeed, a dog's saliva is bactericidal against the bacteria Escherichia coli and Streptococcus canis, although not against coagulase positive Staphylococcus or Pseudomonas aeruginosa. Wound licking is also important in other animals. Removal of the salivary glands of mice and rats slows wound healing, and communal licking of wounds among rodents accelerates wound healing. Communal licking is common in several primate species. In macaques, hair surrounding a wound and any dirt is removed, and the wound is licked, healing without infection.RisksToo much licking of wounds can be harmful. An Elizabethan collar is sometimes worn by pet animals to prevent biting or excessive wound licking, which can cause a lick granuloma. These lesions are often infected by pathogenic bacteria such as Staphylococcus intermedius. Infection is another risk. Horses that lick wounds may become infected by a stomach parasite, Habronema, a type of nematode worm. The rabies virus may be transmitted between kudu antelopes by wound licking.粗略翻译：人们长期观察到被狗舔自己的伤口可能是有益的。事实上，狗的唾液可以对抗细菌，如大肠杆菌、链球菌，尽管无法对抗凝固酶阳性葡萄球菌或绿脓杆菌。对其他动物来说，舔伤口也很重要。 摘除小鼠和大鼠的唾液腺会减缓伤口愈合。啮齿类动物互相舔伤口可以加速伤口愈合。一些灵长类物种族群中也互相舔伤口。对猕猴来说，去掉伤口周围的头发和污垢，同时舔伤口，伤口没有感染就愈合了。风险舔伤口太多可能是有害的。 有时宠物需要戴伊丽莎白圈，防止过度的咬或舔舐伤口，引起舔舐肉芽肿。这些病变往往是因为感染病原菌，如葡萄球菌。感染是另一个风险。 马舔伤口可能感染胃寄生虫，奇异属（一种线虫蠕虫）。狂犬病病毒可以通过舔伤口在羚羊之间传输。
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