Parameters

First txt2img: 

furry, duo, 2boys, furry, anthro, sex, anal sex, anal penetration, rough, rough sex, dominant, motion lines, side view,
BREAK
anthro, beagle, male, naked, balls, canine penis, erection, knot, anus, pain, crying,
BREAK
anthro, grey wolf, male, adult, naked, canine penis, canine sheath, erection, balls, BREAK,
masterpiece, best quality, amazing quality, very aesthetic, high resolution, absurdres, depth of field, newest, scenery, ultra-detailed, detailed eyes, detailed fluffy fur, dynamic lighting, 8k, HDR, ultra-HD, highly detailed, HDR, realism, realistic, photorealism, photorealistic, realistic lighting, caustic shadows, BREAK, wolf fucking beagle,
Negative prompt: worst quality, bad quality, lowres, low quality, bad male anatomy, bad female anatomy, grainy, noisy, render, filmgrain, text, deformed, disfigured, female, breasts, abs, extra fingers, bad anatomy, signature, patreon, web address, text, feral, blurry, faded, antique, muted colors, greyscale, boring colors, flat, bad photo, terrible 3D render, glitch, cross-eyed, lazy eye, ugly, distorted, glitched, lifeless, bad proportions, watermark, window, human penis, vagina, spots, 3some, threesome,
Steps: 40, Sampler: Euler a, Schedule type: Karras, CFG scale: 5, Seed: 2221338958, Size: 1064x904, Model hash: c64ba5dbde, Model: novaFurryXL_illustriousV110, freeu_enabled: True, freeu_b1: 1.01, freeu_b2: 1.02, freeu_s1: 0.99, freeu_s2: 0.95, freeu_start: 0, freeu_end: 1, Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

then img2img: 

furry, duo, 2boys, furry, anthro, sex, anal sex, anal penetration, rough, rough sex, dominant, motion lines, side view,
BREAK
anthro, beagle, male, naked, balls, canine penis, erection, knot, anus, pain, crying,
BREAK
anthro, grey wolf, male, adult, naked, canine penis, canine sheath, erection, balls, BREAK,
masterpiece, best quality, amazing quality, very aesthetic, high resolution, absurdres, depth of field, newest, scenery, ultra-detailed, detailed eyes, detailed fluffy fur, dynamic lighting, 8k, HDR, ultra-HD, highly detailed, HDR, realism, realistic, photorealism, photorealistic, realistic lighting, caustic shadows, BREAK, wolf fucking beagle,
Negative prompt: worst quality, bad quality, lowres, low quality, bad male anatomy, bad female anatomy, grainy, noisy, render, filmgrain, text, deformed, disfigured, female, breasts, abs, extra fingers, bad anatomy, signature, patreon, web address, text, feral, blurry, faded, antique, muted colors, greyscale, boring colors, flat, bad photo, terrible 3D render, glitch, cross-eyed, lazy eye, ugly, distorted, glitched, lifeless, bad proportions, watermark, window, human penis, vagina, spots, 3some, threesome,
Steps: 40, Sampler: DPM++ 3M SDE, Schedule type: Karras, CFG scale: 5, Seed: 3385319478, Size: 2128x1808, Model hash: c64ba5dbde, Model: novaFurryXL_illustriousV110, Denoising strength: 0.45, freeu_enabled: True, freeu_b1: 1.01, freeu_b2: 1.02, freeu_s1: 0.99, freeu_s2: 0.95, freeu_start: 0, freeu_end: 1, Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

Editing and coloring in Paint.NET, then inpainting. Followed by upscaling: 

Postprocess upscale by: 1.4, Postprocess upscaler: 8xNMKDSuperscale_150000G