I do not think this is a problem. Five months is still young, and your Mal-shi might be getting her "puppy rest". I,too, have a 3 month mal-shi, and although she can be energetic, sleeps a lot. If she does not grow out of this habit, maybe she is just not an energetic dog. Shih tzus are more laid back and this dog may be more Shih tzu than Maltese. However, your pet might be sick, so you should check for other signs (ex: coughing, sneezing) Hope this helps! Have fun with her.
Answered by Anonymous - 4/15/2011 6:23:41 PM