Please beware when buying a chihuahua that is supposed to be a toy because there is no such thing. I bought a very small male chiuhuahua after i lost my 6 year old and he had a very large soft spot and i thought he was a apple head but when i brought him to the vet he had 4 spots on his skull that had not closed a enlarged heart and i has to put him to sleep due to pulmanary adema. which is fluid in the lungs from the enlarged heart. he was only 10 weeks old and would have never had a normal life because he struggled to breathe. this was the hardest decision i have ever had to make. PLEASE PLEASE BEWARE OF VERY SMALL CHI'S BECAUSE MOST OF THE TIME THEY WILL HAVE MANY HEALTH PROBLEMS AND SUFFER!!!!!!!