Yellowstone National Park - Yellowstone National Park National Or State Park

5.0	Truly God's Country (09/30/05) Yellowstone National Park is like no other place on earth. From the geysers and natural formations to the wildlife meandering aimlessly across the roadway, Yellowstone has something for every member of the family. Plan to stay several days so that you... By no_illusion36526 from Bay Minette, AL , a user of Yahoo! Travel, Read full review on Yahoo! Travel
5.0	Bison, Eagles, and Bears, Oh My (10/04/05) Where else can a family 'go' and see all the wonder that Yellowstone has? From the animals, to geysers, weather and wonder...there's no place like it on earth. It is a place I've always wanted to go since growing up and watching... By lrogers324@sbcglobal.net from California , a user of Yahoo! Travel, Read full review on Yahoo! Travel

North Entrance - Near the gateway community of Gardiner, MT, the North Entrance is the only park entrance open to wheeled vehicles all year. November through April, the North Entrance provides the only access to Cooke City, MT. US Highway 212 east of Cook

Pet Policy: http://www.nps.gov/yell/planyourvisit/pets.htm
Admission : The entrance fee is $25 for a private, noncommercial vehicle; $20 for each snowmobile or motorcycle; or $12 for each visitor 16 and older entering by foot, bike, ski, etc.