I am a veterinarian and have recently left Panama....I do not have dogs on board but have much contact with people with pets
. I have not heard of any problems or specific requirements unique to Panama...several in our marina have had dogs in and out with standard vaccination and health
certificates issued within 6 months. If you are on the pacific side, look into Vista Mar marina for hurricane
and nice. Also, you get many marina discounts by joining the Panama Posse, not an advertisement, just a practical observation....can save you 30-50% at some marinas
. Safe sailing.