¿Aduanas?

Hola. We came through Mexico city from Vancouver Canada in October
We're were told our luggage and our dog were checked through to Zihua. We thought this strange but said ok. As we checked into our connecting flight we were red flagged. We hadn't taken our dog through customs. Had to go back and do the paperwork for the dog. Had to call a vet to the airport to give him an additional shot. Missed our flight but got the next one. Arrived in Zihua and the dog was there but no luggage. Were told we should have cleared customs in Mexico city. Our luggage was delivered to our door in Zihua the next day.