I worked as a veterinary technician for about 6 years while attending college and then quit when I got my degree. Anyway I know the law in Texas (and most other states and countries) you have to have proof of rabies vaccs usually a cert. given to you by the vet after recieving his rabies vaccs. Also you are required to show a health certificate at the border showing that the animal is free from any infectious diseases. Another website that you can go to other than the Candadian one posted by xCanuk is the US department of Agriculture. There is a link embedded in there about traveling to other countries with your pet and what is required to get them across the border. You should feel lucky though, Canada is not a country in which your pet has to be quarantined for a period of time.