Why dog eats grass? Basically he eats grass because he likes the smell of her, and consequently the taste. Also dogs eat grass to clean their stomach and vomit together with grass its contents.
Gases plagued Jack often. What to do? The gases in the intestines of dogs can be formed for different reasons. One of them is a change of feed. Another is Jack ate something unusual for him, f.e. our human food. If flatulence occurs constantly, it is likely a food that you feed him, it is not appropriate. Change it.
If Jack ate a dead mouse or bird in the yard, what to do? The danger may lie in the fact that the mouse died from the poison, from people, and it has become poisonous. In addition, rodents and other wild animals can be infected with parasites or even rabies. Of course, it is best just to take your Jack to the vet, taking with him the remains of extraction for analysis. If this is not possible, watch carefully for his well-being and behavior. And in general, well-brought-up Jack should not pick up something on the street. So you made a mistake in his upbringing.
People get tired of the monotony in the diet. Does Jack need in the various food? The most common misconception among owners: my Jack tired every day ate one and the same, the food must be changed frequently. It is not. The more constant diet, the better dog’s health is. Frequent changes in the feed lead to disturbance of digestion, occurrence of diarrhea and allergies. You can change course of feed, but only in connection with the state of health of the dog, on the occurrence of allergy and so forth.
Why does my Jack eat feces? This habit (Vets called it "coprophagia"), is subject to practically any member of the canine kingdom, regardless of the breed and its destination. Similarly, it is unclear why, but dogs love to do it. One view is that they find the substances which are not included in their diet in the dog faeces. However, if your Jack has a varied and balanced diet, this explanation seems doubtful. Rather, it is a physiological problem, and it can be solved by using special drugs that can be purchased in the veterinary pharmacy. If you notice this behavior with your Jack, include such drugs in the diet.