Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to microchip your cat [title] Avoid microchipping your cat on your own. [step] Never inject your cat with a microchip on your own. This is illegal in many states and can cause you to have legal measures taken against you.

Ending1: [title] Take your cat to a vet if your cat appears or acts strange while you are microchipping. [step] A vet can rule out anything relating to your cat's sensitivity. Ending2: [substeps] There are sellers who will sell you a microchip without going through a veterinary office, but you should never implant these devices yourself. Take these to your vet to have them checked out and implanted in the right way. Ending3: Try to avoid doing so on your own as well. People who come in contact with this type of pet are generally not able to microchip their cats. Ending4: Keeping your cat indoors with the chip is also illegal, as is using an epipen or prescription medicine. [substeps] Skip this part and put the microchip into an epipen.

Answer format: ending1/ending2/ending3/ending4