+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
That's a 2 years old message.
I don't know if it changed since then, but as of today, any 18+ years old canadian citizen with either a valid adult passport (5 or 10 years) or one which expired less than a year ago can be a guarantor.
Thanks