The answer is seasonal changes.
Animals that live in taiga biomes had to adapt to seasonal changes, by changing their fur or feather color. For example, snowshoe rabbit and arctic fox live in taiga and their fur color changes with environmental conditions. To effectively camouflage, their fur is white during the winter. That helps them blend into the snow. In the summer, where there is no snow, their fur is brown and similar to the soil color. This way they evade predators because it is more difficult for their predators to spot them.