Why are mos hybrid animals onsiderer evolutionary dead ends?

Hybrid animals are often considered evolutionary dead ends because they typically result from the mating of two different species, leading to offspring that may be sterile or possess reduced fitness. This means they cannot reproduce successfully and pass on their genes, limiting their ability to contribute to the gene pool. Additionally, hybrids may lack adaptations necessary for survival in their environments, making them less viable than their parent species. As such, they do not play a significant role in the evolutionary process.