The purposes of this study are to investigate park users' acceptances for pet dogs in parks and explore how users from different types of parks and dog guardian status affected their acceptances for pet dogs. The Yangmingshan National Park, the Manyueyuan National Forest Recreation Area, and the Da-An Forest Park were the study sites. The study results indicated respondents of Yangmingshan and Manyueyuan reported significantly higher acceptances for dogs in a general outdoor area than in Yangmingshan and Manyueyuan; however, respondents of Da-An have no significant differences between their acceptances for dogs in Da-An and a general outdoor area. The respondents of Da-An more accepted park users bringing dogs, but the respondents of Manyueyuan and Da-Anhave more supported that dogs should be on leash in a general outdoor area. Users in different types of parks and dog guardian status have significant influences on the acceptances for dogs entering a general outdoor area. In general, urban park users more accept dogs and dog guardians more accept dogs entering parks. Therefore, park managers should consider park types and user types when setting pet dog policy and management strategies.