While most dogs can handle eating
the occasional piece of cheese, many dogs react poorly to eating any dairy products.
Even though I feed my 8 year old Schnauzer / Poodle mix a good quality lamb and rice mix food and no people food (except for
an occasional piece of cheese) she has periods where she will leave a mess on the carpet even though she has just been outside a couple of hours earlier.
Interestingly, when we challenged dairy that next week, she did fine, meaning
the occasional piece of cheese might be fine.