An instinctive behavior in both animals and humans when injured is to lick the wound.
Saliva does contain anti-bacterial agents and possibly tissue factors that promote healing, but it's not generally recommended in Real Life given the possibility of infection and especially not after major surgery. Hence the existence of the Cone of Shame.
Often used as an indication that My Instincts Are Showing. In some cases their saliva might be an example of a Fantastic Medicinal Bodily Product, in which case it's justified. This trope, through Intimate Healing, can overlap with Lecherous Licking.
- In one episode of Wolf's Rain Toboe is shown licking Tsume's injuries, which he objects to when he wakes up. Note that they're wolves who project illusions to make them look like humans, and the scene shows their human forms.
- One of Fist of the North Star's protagonist Kenshiro's most common actions in battle after being slightly injured is to touch the wound with a finger and then lick the blood off of it. It's one of the many ways he shows how badass he is.
- In One Piece, not long after Zoro gets transported to Mihawk's personal island, he battled warrior gorillas who use their spit as first aid. Zoro lampshades it, being appalled by the gorillas' intelligence.
- Tohru tries to lick Kobayashi when Kobayashi is injured in Miss Kobayashi's Dragon Maid. She claims that her saliva is a coagulant (not to mention the fact that bacteria can't survive in a dragon's body) but Ilulu suspects that it was actually a case of Lecherous Licking.
- Azur Lane: Akagi licks the cut on Kaga's cheek while healing her.
- Later, Ark Royal tries to do this when the destroyer Glowworm cut her finger. Glowworm reacted exactly like you would expect.
- At the end of Heart of Ashes, Smaug does this to his gashed hindleg. It's explained that since he's a dragon, his saliva is antiseptic enough due to being boiling hot.
- In chapter 5 of Heritage of the Wolf, Jenna licks Balto's wounds after he gets injured helping her.
Film — Animation
- In Beauty and the Beast, the Beast licks his wounds after rescuing Belle from the wolves, while Belle tries to clean them with fresh water instead.
Film — Live Action
- In Tim Burton's Alice in Wonderland (2010) after Alice returns the Bandersnatch's eye it licks the festering claw marks it left on her arm in their last encounter, causing them to heal in seconds.
- God's Own Country: When Johnny hurts his palm during farm work, Gheorghe spits into his wound as first aid. After having their second sex, Gheorghe does this which doubles as a gesture of affection.
- Having brought the wounded rabbit Hazel back to Watership Down, Hazel and the other rabbits try licking the wound in Hazel's right flank. The tern Kehaar asks them if they've removed the little black stones. "Stones?" wondered Hazel. "Always with gun is come little black stones. You never see?" Kehaar then uses his narrow forceps-like beak to extract the shotgun pellets from Hazel's soft tissue. This scene is faithfully animated in Nepenthe Productions' Animated Adaptation.
- In The Coming Race, the Vril-ya are able to heal wounds by kissing them.
- Artemis Fowl: Dwarf saliva apparently has healing properties. Mulch is able to recover both thumbs being badly burned in a few minutes thanks to this.
- In The Summoner Trilogy, Fletcher's Salamander can actually heal wounds this way.
- Stray dog Lucky teaches the former pets the value of wound licking early in the first Survivors book:
"It's only bad because I haven't stopped long enough to tend to it. Look." He licked carefully at the wound. Sure enough, it felt better already. "Come on, Sunshine. Try it."
Obediently Sunshine bent her head and licked rather dubiously at the scratch on her own paw. When nothing terrible happened, she tried again, and was soon washing it quite painstakingly.
"You're right," she whispered in awe. "It doesn't sting so badly. It does feel better." She stopped licking to gaze admiringly at Lucky. "He's right, everybody!"
"You see?" he barked. "You don't need a silly longpaw vet!"
- Lampshaded in The Alienist when Dr. Kreizler offers to lick a cut on his servant Mary's hand. He tells her that saliva contains a natural coagulant.
- In Hc Svnt Dracones canid characters can take the "Antiseptic Saliva" Bio-Augmentation, which acts similar to a First Aid check without needing to roll.
- A potential trait in Niche - a genetics survival game is "healing saliva".
- Chrono Trigger: One of the first techniques that Frog (an anthropomorphic frog) learns is Slurp, which restores a small amount of health to himself or another party member, and does indeed involve him licking that person.
- In Darkest Dungeon, the Hellion can lick her teammates' wounds to heal them as part of the Wound Care skill.
- The Fox Sister: After her fight with Soot Bull the kumiho's shadow is shown in fox form licking the shoulder he injured.
- In Girl Genius Maxim licks his hand after it gets impaled by Old Man Death.
- Exploited by Zii in Ménage à 3. When she burns her tongue with hot coffee, she tells the attractive waitress Sonya that they need to apply saliva on the burn, and the best way to do that is making out. Sonya doesn't realize Zii has saliva in her own mouth.
- Some cats and dogs will attempt to lick their owner if they find a wound, or even a rash. It is not good for this to be allowed at all as this can infect it easily or transmit disease, and there are far better, safer, and more effective alternatives to help heal something, even on a budget.