He is a male cat, neutered, 20 years old. The other cat is male, neutered, 10 years old. They are both still eating, drinking and peeing, just not pooping. I started them on some new soft food, could that be the reason

  • Welcome to pets.se Robert! I have linked questions similar to yours, please have a look at the answers provided :) – Rebecca RVT Aug 14 '18 at 1:37

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