What you need to do is contact the airlines servicing the DR from Toronto. Contact the airlines and ask them if there are weight restictions. It is common for the airlines to have size limitations for the containers of the animals. It would be an indicator. If your pet fits in maximum size it may be able to travel.
Note: there are other requirements for pet travel and you should ask the airlines.
Regards,
PJT
Ours come either for 5-6 months or forever..... REALLY $$$ to bring them on trips
Not sure there's that much trauma..... for a crate trained dog