I am currently taking Veterinary Technician in Saskatoon through SIAST. I didn't look into the tech assistant stuff at all but I know when I was first looking at colleges Olds College offered distance learning for their tech program. After you've completed the program you need to write a national exam to become registered. I'm not sure whether American diplomas would be accepted here, I know certain states accept diplomas from Canadian programs.
"He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion."