I read some time ago that the chihuahua was sacrificed at funerals by Aztec priests so the dogs could help guide the deceased human to the after-life. One story/source even said the purpose of the chihuahua's death was to act as a martyr and absorb the sins of the deceased, so that the Aztec would have a pure soul and could get into heaven. Sound familiar? Maybe I would have felt a greater connection to Sunday School as a kid if Jesus had been a chihuahua.