Minerva, congratulations on your new addition!!! I learned the hard way that it is not so easy to have two dogs on the same food. Some dogs need a high protein food. Others a low carb. Or high fiber. Or a novelty protein (ie: venison) with a single carb source (these are called Limited Ingredient Diets). As much as I tried, my two guys cannot eat the same dog food.
I agree with others, that Beneful is not the most high quality dog food out there for your pet. ToTW is much better, but it may be too high in protein for the dog you have now. You said she was aging but didn't mention how old she was.
To all dog owners, the poster that provided a link to the dog food advisor website, this is an excellent site to research dog foods. It breaks down all foods by protein, fat, and carb content percentages, and also gives you explanations on the remaining ingredients in each food.
Also on this website there is a place for you to sign up to get email alerts when there has been any kind of dog food (and even treats!) recall. This s HUGE! I get emails about once a week regarding some sort of recall. I've had two foods that my dogs were currently on end up on a recall list, and had it not been for those email alerts, I would have never known. There has been a rash of recalls this past month for foods like California Natural, Innova, and EVO and just this week two different brands of RAW diet (RAW is a whole different food concept for dogs, and I'm not criticizing it, just stating it is different than your more common dry kibble and canned food diets) foods have been recalled. All for possible sallmonella contamination.
Anyway, I just wanted to let you know that ToTW may work for your new puppy, but not your
current, but definitely worth a try in changing your current dog over to ToTW, because it's a much
better quality food than Beneful. As another poster mentioned, be sure you gradually change your current dog over from the Beneful to ToTW to avoid gastric upset. Start with 3/4 Beneful and 1/4 ToTW- do this for two to three days. Then go to 1/2 Beneful and 1/2 ToTW-do this for two to three days. Then go to 3/4 ToTW and 1/4 Beneful-do this for two to three days. Then after that go to all ToTW. A change in diet should take no less than 7-10 days. If you find your dog is getting a little tummy ache while transitioning, mix in one teaspoon of canned pumpkin. It must be 100% pumpkin, NOT the pumpkin pie filling in a can, as that is pure sugar.
Best of luck to you with the new puppy!!! As you know photos of the new puppy are a requirement!!!!
