To explain what happened with the Maltese, the bitch was out in her yard with the puppies, and the Maltese came charging out of its house, barking its head off, headed right for the fence. Mama went ballisitic, and went right THROUGH the fence. One bite, and it was all over. :( Animal control investigated, and said that what happened was understandable, and there was no reason to declare her a dangerous dog. Her owner paid to have a better fence built, and paid for a replacement puppy for the neighbour.
She is fine with strangers her owner introduces her to, and with dogs she's around all the time. However, last summer, when we let her run loose with my 10 month old pup (her daughter from last year) she bit her on the face. It was more of a nip than a bite, but it did draw blood.
Louise, thank you for the suggestion. She does seem to have chronic loose stools! I've suggested this to her owner before, but she's always come up with some other excuse for it. If it IS epi, it's mild, because she got back to a normal weight not too long after weaning the puppies. It was a large litter (9) so she certainly didn't look her best while she was nursing them.