The U.S. Consulate in Tijuana issued a reminder this week that all animals crossing into the United States, including service animals, must meet federal entry requirements. The advisory comes ahead of the busy Semana Santa travel period, when thousands of residents and visitors cross through Tijuana’s ports of entry.
Travelers without proper documentation risk having their pets detained or turned back at the border. The rules apply whether you are crossing at San Ysidro, Otay Mesa, or any other U.S. port of entry.
What Dogs Need to Cross Into the U.S.
Dogs traveling from Mexico into the United States require a certificate confirming the absence of screwworm larvae. This certificate must be issued by a government-authorized veterinarian in Mexico. Since August 2024, the CDC has also required anyone bringing a dog into the U.S. to complete an online import form before crossing. The form generates an email receipt valid for six months and usable for multiple crossings.
Several veterinary clinics in Tijuana offer packages that include microchip registration, rabies vaccination, and the required certificate. Costs range from about 200 pesos (roughly $11 USD) to 3,000 pesos (roughly $160 USD), depending on the services selected. Mexico’s federal government maintains a directory of authorized veterinary clinics where these certificates can be obtained.
Rules for Other Animals
Cats, ferrets, rabbits, and rodents face no special health requirements from APHIS (the Animal and Plant Health Inspection Service), the USDA agency that regulates animal imports. That said, pet dogs and cats may still be examined at the border for signs of disease that could be transmitted to humans or other animals.
Birds, reptiles, and hedgehogs require specific permits before crossing. Exotic animals may involve additional agencies, including the U.S. Fish and Wildlife Service and the CDC (Centers for Disease Control and Prevention). Travelers bringing any of these animals should check the APHIS website for detailed permit requirements well before their trip.
Consequences for Noncompliance
U.S. Customs and Border Protection officers can detain or refuse entry to animals that lack the required paperwork. Pets taken out of the U.S. and returned may face the same requirements as those entering for the first time. The consulate advises travelers to gather all necessary documents before arriving at the port of entry, not at the crossing itself.
This story was first reported by Baja California Post on April 3, 2026.