FURVERT!

anal anthro anus balls bird_dog butt canid canine canis domestic_dog duo fart fart_cloud fart_fetish fart_mask fart_sniffing fart_tubes gas_mask genitals golden_retriever hi_res hunting_dog knot knotted_penis male male/male mammal mask mephitid oliver_(rbaker)open_mouth penis raised_tail retriever skunk slim smelly sniffing tail tongue tongue_out y32010g