are dogs allowed in yoho national park?
And your dog must be kept on a leash at all times to avoid becoming a meal for a bear, cougar, wolf, etc. ... Dogs are not permitted on the Lake O'Hara bus or in the Lake O'Hara campsite. So staying there would not be an option. The only way to see Lake O'Hara with a dog is to hike in and out on the same day.