Often, when I'm not around and one of my family members slices an apple, they will give my pig the core. This makes two problems: one, I don't know about it and give him more treats, which leads to over feeding and two, they don't remove the seeds. Apple seeds contain trace amounts of cyanide that don't usually harm humans, but can be dangerous in small doses to guinea pigs. This has happened many times over the course of their lives. Because I wasn't there at the time, I don't see him eating the seeds, but I also seen no remains of them. What should I do to make sure he's okay? I'm really upset.