You make a really good point. The environment and ecosystems animals exist in are just as important as the biological evolution of the species themselves. It's an entire interconnected system that had to co-evolve over long periods of time. For life to exist at all on this planet, all the right environmental conditions like temperature levels, water, oxygen content of the atmosphere, etc. had to be perfectly aligned. It's unrealistic to think biological evolution could have occurred without parallel changes in the surrounding environment as well. Evolutionists should be examining that bigger picture connection more closely rather than seeing species as isolated from their habitats. Nice food for thought here!