The thing is, the "scientists" back at the School had been playing with risky stuff, combining human and nonhuman DNA. Basically, the spliced genes started to unravel after a while, and the organisms tended to, well, self-destruct. The flock and I had seen it happen a million times: The rabbit-dog combo had been such bad news. Same with the sheep-macaque monkey splice. The mouse-cat experiment had produced a huge, hostile mouse with great balance and an inability to digest either
The scientists at the school were conducting dangerous experiments by mixing human and nonhuman DNA. These genetic combinations often failed over time, leading to the destruction of the organisms involved. The narrator and their group had witnessed many instances of this, such as failed rabbit-dog and sheep-macaque hybrids.
"The mouse-cat experiment had produced a huge, hostile mouse with great balance and an inability to digest either," highlighting the unpredictable and risky outcomes of these genetic manipulations. The experiments underscored the dangers of irresponsible genetic engineering.