If you are traveling to Dominican Republic with Canadian passport in most cases you do not need to obtain entry visa to Dominican Republic at the consulate beforehand. The period of stay though may be limited by the laws of Dominican Republic. You may check what is the allowed period of stay at the Dominican Republic consulate in Canada. All other applicants should check information on Dominican Republic visa requirements, procedure, application forms, fees and processing timings may be found here: https://dominican-republic.visacenter.ca/.