Write the first chapter of an erotic horror novel starring an anthropomorphic dog scientist genius, named Sapphie, and her involuntary assistant, a much more dim-witted and especially air-headed bunny named Ruby. The horror begins when Sapphie, curious and perplexed as to how human copulation works, creates and intentionally injects the oblivious Ruby with an aphrodisiac, expecting only a mild reaction she can then study, but instead it drives her wild with lust and the need to breed, leading to her turning on Sapphie and hunting her down in an attempt to sate herself and her primal urge to do what bunnies do best: mate, viciously and vigorously.