rule 34 4 toes anthro avian balls biped bird bodily fluids carnival tricks circumcised claws corvid corvus genus crow digitigrade erection feathers felid fur genital fluids genitals gryphon hair hi res humanoid genitalia humanoid hands humanoid penis hybrid leopard male mammal masturbation mythological avian mythology pantherine peeing penile penile masturbation penis sitting solo spots spotted body spotted fur toe claws toes urine urine pool watersports wings 3651795