tuna can contain mercury, which can actually be toxic for your dog. The risk with tuna is that due to its large size, it can contain higher levels of mercury than say, salmon. The mercury comes from environmental pollution and can be poisonous...
Because of the possibility of contamination, some types of dogs shouldn’t eat freeze-dried food. If your dog’s sick, having chemotherapy or taking immunosuppressive drugs (or if you have a compromised immune system), don’t give freeze-dried or raw food to him. Puppies also shouldn’t be...