I was told by Animal Services when I got Tess's license that I should Micro Chip her. Is there any disadvantage of doing this. Do these chips cause any heath problems etc. They told be to have the veterinarian do it ASAP since small dogs like Chihuahua's are often stolen. I can't see that ever happening since she's not out of my sight when I'm with her, but God forebid if someone robbed my place and decided to take her, that would be the only time the chip would come in handy. What do you Pet Talk people think?????