LM44 said:
Well, beside dog's, I haven't seen others in real life; but since I've wandered the internet for different curious facts and seen quite some documentaries... from time to time the dicks of other living beings pop here and there for science (I really mean it: National Geographic has this documentary called "The King Cobra" that devotes a segment to cobra's fucking XD).
Have I been grossed for what I've seen? Sometimes. Not to the point to want to stab my eyes and wash in holy water, but when I recall some images I think "I could have skipped that scene and live a happy life".
Was I attracted somehow to make those designs part of my hentai fetishes? Not really; not the figures at least. But the practices... those are interesting actually. They put into perspective why humans do what they do and how some R34 scenarios could be more kinky (or weird, depending on personal tastes XD).
What I think of artists and their designs involving this? For what I've seen, the general "most accepted" (so to speak) design lies between dog's and horses (each version stylishes the details of the design for their own purposes; very few artists actually go for realistic depictions when it's not part of the fantasy).
It makes sense, specially when "furry" or "bestiality" is not the main focus of the work, or it would be impossible to make generally acceptable art based on that: snake pokemons should have two dicks (and fuck for hours), whale pokemons (or Beast Boy) should have a dick the size of a car, cat pokemons should have spikes on theirs (something that hurts the pussy a lot), duck characters (depending on the species) could have "corkscrew dicks" (for some reason some birds like pretty rough action, the corkscrew shape is because the female has evolved to have fake vaginal channels to make difficult fertilization when she doesn't want it... so yeah, the male bird basically forces his way into that laberynth), snails fence with their "dicks" to decide who will be the one impregnated (snails don't have average dicks, they shoot calcium darts filled with hormones and chemicals that trigger pregnancy in the one who gets the biggest dose), some fishes become "sperm parasites" of the females (they bite the female, the wound heals around their mouths, their eyes rot, they lose shape since they feed directly from the bloodstream of the female and when she needs sperm to fertilized her eggs... the fellow just let's his load go inside her and it travels to her eggs, no regular intercourse needed).
Yep, the world is a very strange and kinky place.
Another thing you forgot to mention is that pigs have similar corkscrew cocks, and when they cum, they release this white gel substance that's meant to keep the cum inside the sow's pussy. It's very weird.