cottage cheese is great for a sensitive stomach, and of course so is the pumpkin if you are looking to add fiber and get rid of diahreah.
keep in mind, giardia is another option if they have both eaten grass or water togehter. that will make poop funky and turn into diarhea
The changing of the food is important for the basenji breed with IPSID running around out there. You may not see IPSID until your basenji is 4-5yrs old and the intestinal track will slowly become allergic to the food that has been eaten for so long. To help the intestines, my vet recommends changing the diet every 4 months to help the body adjust to different foods and not have enough time to establish an allergy to the food.
If you change any food without doing it slowly, you will get the runs.
What is important with changing foods on a regular basis is the consistancy of the quality of food. If you are changing the food and trying to be helpful, spend that money and get the best brand you can afford. Smaller poops, better coat, just better.
Basenjis in the wild dont eat the same thing every day. Feeding your basenji the same dry food every day is a corporate ideal. Giving your basenji additional foods seperate from dry food is great. Removing a lot of grains is great, especially corn which is one of the most common fillers in dog food and isnt easy to digest.
If you cant afford Natural Balance or Innova and you want a grade higher than grocery store, but only can afford Petsmart foods here is a good rule of thumb. Read the ingredients. The first three ingredients are the most important. Try to find the first three that are meat as opposed to grain. I find the Eukanuba Performance foods are higher meat content than Maintenance etc.