Is it okay to mix Tuna Fish (from a can) with my puppies kibble? I know that my bf has been sneaking it into his food when he feeds him on the weekends when I am at work. He asked me if it was okay and I said I didnt know and until I find out to stop! So just wanted to know what you guys thought and if it was okay to feed it to him. Oh he is only 14 weeks old