What's wrong with our dog ?

Łata [whata-a] behaves strange. She's walking around with her (it was Tytus property in the matter of fact) squeaking ball in mouth, she seems sad and eventually she got into my wardrobe... I think, that it's beacouse she wasn't ever pregnant and had not puppies.
I've heard that some female dogs (seeing eye bitch) have such a imaginary pregnancy. Poor what-a...
Ps. Tytus = Ewas dog.