dog questions

We brought our dog this year, not many problems coming into mexico. The border animal control person took us aside looked at the dog didn't require any paper work. Yet, I did bring the rabies vaccination papers and a health certificate which cost 80 bucks. Just wonder what we need to leave if anything? and re-enter Canada - air canada flying into toronto? not for 2 months though. We're in a closed in condo unit so the dog isn't coming in contact with any 'street' dogs. Not sure what we have to be careful of there if she does.

Odd questions
are poop bags even a thing? we looked and looked for any sorts of bags they seem hard to find in ixtapa.
and, is there any places where we can get dog bones?
dog parks don't seem to be at thing here at all, but are there any hiking areas where we can bring dogs around ixtapa?

sideline question: what's the best way to get bikes over the mountain to zihua side? we plan to do a long mountain bike ride but really don't want to climb that massive hill from ixtapa to zihua we did that yesterday and its a hell of a climb...such wonderful food on the zihua side in comparison but way busier on the zihua side (ie we want to save the fun for playa larga and area). Will taxis take bikes? or the combi bus?