My boy Kimchee (2 1/2 years old) has a sensitive stomach. Whenever I ingtroduce new food or treat, if I give too much, his poop will become soft. One time I gave him too much zucchini, he had runny poop for days, he also pooped in his bed (could not hold), poor guy!
On the other hand, my girl Mochi (8 months) has a iron stomach. She can eat whatever new without taking time to adjust to it. I knew it because when she was 4 months old, she got tired of her food in 3 days, so every 3 days we had to give her new brand of food, and the sudden change of food did not seem to bother her little stomach. She was a picky eater, she was not interested in any treat. Now she loves to eat whatever Kimchee has.
