S10E3: Bart the Mother

In "Simpsonlar - S10E3: Episode 3," the episode titled "Bart the Mother" comes to a close with Bart taking responsibility for two eggs he accidentally orphaned after shooting a bird. The eggs hatch, revealing not birds but lizards known as Bolivian Tree Lizards, an invasive species. Bart, feeling guilty and attached to the creatures, tries to hide them from others. Meanwhile, Springfield's residents, led by Principal Skinner, see the lizards as a threat. In an ironic twist, the lizards end up solving Springfield's pigeon problem by eating them, which unexpectedly makes them heroes. Mayor Quimby, always the opportunist, spins this into a positive PR moment for himself. The town decides to embrace the lizards for their unintended service. Bart feels a sense of relief and accomplishment, even if it was all a bit of an accident. As the episode wraps up, the Simpson family returns home with Bart having learned something about consequences and responsibility—though in typical "Simpsons" fashion, it's not entirely clear if any lessons will stick.