 [ Symptoms ] can my dog have cogestive heart failure  my 2 12 year old female sheltie will not let me rub her tummy while doing her tricks she can not roll over she has gained weight over the winter but almost 2 pounds in the last week her chest is larger than normal which could be the cause of weight gain we limited treats went from active dog food to light we have limited the amount to 1 12 cups of dry dog food she continues to poop but seems to be more constipated [ Disease ] masturbation is normal and is not harmful your decision to stimulate yourself is personal and private you can stop if you want or you can go on and pleasure yourself as you see fit