Pets vulnerable to post-traumatic stress, too

Like war veterans and survivors of disasters, dogs and cats also can suffer from post-traumatic stress disorder.

Katrina survivors who are reunited with their pets may notice such signs of stress and anxiety as breaking housetraining or pottying outside the litter box, barking or meowing more than usual for no apparent reason, hiding and sometimes aggression. In addition, dogs may pant, pace or lose weight.