They had entered through the pet door to get to the cat food she had left out on the floor. Although wildlife in urban areas is usually a delight to Boulder County residents, close proximity to wildlife can cause unsettling or unwanted encounters. The key is to prevent problem wildlife encounters by keeping wildlife out of homes, buildings and yards. Feeding songbirds is okay, but be aware that it may attract other animals. Place bird feeders where they are not accessible to other wildlife.
Wild animals are capable of finding plenty of food on their own.
Cover window wells. Use commercially available grates or bubbles or make a cover yourself using -inch hardware cloth or chicken wire. Close holes around and under your home's foundation to discourage homesteading. Bury wire mesh 1 to 2 feet deep in places where animals might gain access. Seal cracks and holes.