Elements describe oral contact in the genital region of a large and overweight person:「snout with orifice of obese service provider, pig」as do all the other combinations…PANTING, USING ONE'S STIFFENED LIPS AS A BEAK and so on.
Nonetheless: porcupines and hedgehogs must ingest a large amount of salt to maintain their metabolism, hence to obtain salt, the animals are in fact quite bold and fearless (or, stupid), and will eat nearly anything that smells salty (feces are often quite salty) being uninhibited by nature.「Fearless and uninhibited, never quit」with「orifice, mouth」as an animal's PECKER, or SNOUT, or PANTING in great pain or pleasure, with these elements euphemistically pointing toward a sick penile meatus that still seeks thrills.
Or, similar screaming of「hedgehog, porcupine at the orifice」or the porcupine's mouth:
「The ritual seems more like a fight as it is an extremely noisy event. [it sounds as if people are screaming at the top of their lungs] The courtship, or 'pre-mating display,' is initiated by the male when he comes across a solitary female on his nightly wanderings. He approaches her, snuffling and snorting, and circles closely round and round, trying to claim her attention. The female shows no interest. She twitches violently and repeatedly turns away from him. The male persists and circles closer, snorting louder and louder, sometimes for hours. Often a second male will approach, attracted by the noise, but the intruder's presence is not tolerated, and the male inserts his muzzle underneath him and pushes him out of the way. The female, totally unconcerned, may wander off. A high proportion of attempted hedgehog matings fail due to the female's lack of interest. Ultimately, however, the female may become receptive and allow the male to mount her. Mating may only last a minute or two, and then the pair separate. The male plays no further part in bringing up the family, and if the hedgehogs ever meet again, it is probably only out of chance. Unless the female places herself in the correct position, mating will be impossible. She must lie with her hind legs spread out, belly pressed flat to the ground and nose pointing upwards. The formerly aggressive spines must be laid flat: the skin of a male hedgehog's belly is thin, and he could be badly injured. He mates with her from behind, gripping the spines with his teeth. Hedgehog reproduction is not very efficient. The female often mates several times before becoming pregnant, and quite a few females may reach the end of the season without conceiving.」
[ now-dead link was https://www.hedghogz.co.uk/hedgehogs/babies.php 2012-08-27 so instead see https://www.wildlifeonline.me.uk/animals/article/european-hedgehog-breeding-biology-season-courtship 2023-05-17 ]
Hard as are hedgehog quills, both boar and dog snouts are euphemistic of a human male's erection: long and hard with an orifice at the tip: swine use their snout to burrow into soil seeking mushrooms (imagine that) and dogs poke their nose into an anus in order to identify the scent of the anus' owner for later reference. Other analogies remain fundamentally for the reader's fertile imagination.

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: beak; snout; mouth; to pant
Japanese EDRDG: beak
Unihan extended: beak, bill, snout; pant