I'm not vegan, but the Del Monte website only says vegetarian. There must be an animal byproduct somewhere.
What
@Whaa? said. I dont want to jump down your throat or anything, just explain, because this is a common misconception with non-vegans and it makes veganism sound really complicated and difficult.
There are many foods that are vegan that are not labelled as vegan or vegetarian (tins of tomatoes often aren't labelled, neither are loose fruit or veg).
There are processed foods (and I include foods like pasta here, which are not ultra processed crap but normal staples) which have the 'may contain dairy, etc' label. This label is there for people with allergies. Most vegans don't care. Because being vegan is not about being 'pure' but about not harming animals. If I buy a product which is produced in the same factory as animal products, I'm not supporting animal agriculture.
There are no vegan foods if you apply the 'purity' model. Insects die in the process of harvesting plants, so do rodents and other small animals. The truck delivering my food may contain leather or animal derived glue. These are things vegans can't control. What we can control is how we live, eat and spend our money. We do not spend our money on things that directly exploit animals. We can campaign for change in plant farming practices. We can encourage or fund the development of materials and products that are animal free, sustainable and ethical.
For any newbie vegans, if you are out food shopping and a product doesn't have the vegan label, check the ingredients. Google the e numbers and additives and apply your best judgement.