I much prefer the idea that Jade tried to get pregnant but discovered she was infertile; it's much more interesting and compelling for the character than her having a dog's penis. It seems more like fetishistic content mixed with a trans-misogynistic joke.
there are reel humans on hstwt who will tell you in full sincerity that postcanon jade harley does not possess canine genitalia and will call you illiterate for believing otherwise as though this exchange was simply a pibby glitch/mandildo effect