First off, let me just say that THOSE are some beautiful Saints. Your Golden and Jack Russel are cuties too! I'm Marissa, mom to Zoey an Alaskan Malamute and Dolly, my first Saint Bernard. Glad you found BigPawsonly.co
m! You will learn so much on this site, like I have.
I'm not a good person to ask when it comes to training questions as the only thing my two have learned is how to sit and that is when they want to!
But I may be of some help on the food question. Feeding large breed food is essential for large and giant breeds. The nutrition in it specifically targets their needs. Smaller breeds don't have the same nutrition requirements necessarily that big dogs do. So first off, I suggest putting both your Saints (maybe the Golden too) on a large or giant breed food. Next, feeding Large Breed adult or large breed puppy is up to you. There are two opinions on this issue, as you'll quickly discover here. One is that large/giant breed puppies need to grow slowly and should always be on large breed adult food so that the vitamins in puppy food don't make them grow too fast for bones and joints to catch up. The other opinion is that large breed puppy food was made with large breed puppies' needs in mind, therefore, it is safe to use. I'm not necessarily sure one way or the other, so that decision is completely up to you. Lastly, let's focus on brand. Brand name really is important. In this brand name-game, you really do get what you pay for. Purina is not the best food, ESPECIALLY for large breed dogs. It is very poor ingredient wise. But don't feel bad for not knowing this! I started my two out on Purina Puppy Chow too before I knew better! Avoid Purina, Pedigree, Beneful, and Iams. They rank very lowly on the totem pole of dog food. I'm not sure what kind of stores you have around you in your area, but if you're like us, we have to buy all dog food out of town to get a good quality dog food. Price-wise, Nutro Natural Choice is affordable, has a few good ingredients, is relatively easy to find (Petsmart, Petco carry them), and has glucosamine in it to help strengthen hips in large breeds. Now, I know it's not the best food, but I'll let some of the others tell what they think of some other brands. But I feed Nutro Natural Choice because I can afford it and find it easily.
Glad to have you here! Can't wait to learn more about you and your fur crew!