i'm here in florida visiting a friend and i brought my chihuahua with me. she just pointed out something strange my dog did...it's very hard to describe but i'll do my best... it seems that every now and then, she'll take a breath in and she whole body will shake and tense up for about 5 seconds kind of lika a combo of hiccups and her trying to take a breath or something. she doesn't seem bothered by it but it's happened more than once. does anyone else have that same problem. any inside could help.