No additional generations done for final image of bathroom scene, merged in Krita using the Background and Rhino images.

Background

filthy public restroom toilet stall with glory hole, (masterpiece, best quality, high quality, highres, ultra-detailed, realistic),
Negative prompt: (worst quality, low quality, normal quality),
Steps: 20, Sampler: DPM++ 2M Karras, CFG scale: 7, Seed: 2923355989, Size: 512x768, Model hash: 2e9308b12d, Model: indigoFurryMix_v110Realistic, Version: 1.8.0-RC

Rhino

full body portrait male rhinoceros wearing leather jacket facing away ass shot stretched anus pants down
Negative prompt: (worst quality, low quality, normal quality),
Steps: 20, Sampler: DPM++ 2M Karras, CFG scale: 7, Seed: 2573246111, Size: 512x768, Model hash: 2e9308b12d, Model: indigoFurryMix_v110Realistic, Version: 1.8.0-RC

Rhino Dick Out

(full body portrait:1.3) male rhinoceros wearing leather jacket facing away penis shot stretched anus pants down cum leaking
Negative prompt: (worst quality, low quality, normal quality), cropped
Steps: 20, Sampler: DPM++ 2M Karras, CFG scale: 7, Seed: 2919193663, Size: 512x768, Model hash: 2e9308b12d, Model: indigoFurryMix_v110Realistic, Version: 1.8.0-RC