Hi Alfei,
I have a 8 year old Chihuahua who does the same thing and I've taken her to the vet 3 times with no success to the problem. The vet told me she has a problem with her heart and it would cost about $1200 for the surgery with no guarantees. My Chihuahua is a tea cup which weights about 3lbs. Although, she has this problem it doesn't affect her eating or playing activities. Other than that she's ok. Hope this help you, because I think this problem happens to Chichuahua's.
Irastine
I have a 8 year old Chihuahua who does the same thing and I've taken her to the vet 3 times with no success to the problem. The vet told me she has a problem with her heart and it would cost about $1200 for the surgery with no guarantees. My Chihuahua is a tea cup which weights about 3lbs. Although, she has this problem it doesn't affect her eating or playing activities. Other than that she's ok. Hope this help you, because I think this problem happens to Chichuahua's.
Irastine
