Hi,I have a white male boxer.He is 10 yrs old,weighs 90 pds and is in good health.My husband has been gone 2 wks and this was his best friend.Rocky has been having rapid breathing for 3 days.He is eating and drinking,but his breathing seems rapid.Could he be grieving?I am not sure what it could be?He does not seem sick and his gums look healthy.Thanks Marcia

Optional Information:
Age: 10; Male; Breed: white boxer

Already Tried:
Not sure what to do.