Hi My Name Is Barbara I Have A Question Concerning

Hi my name is Barbara I have a question concerning my dachshund my question we just recently loss our yorkie could my dachshund be depress because of that he vary close to my yorkie the yorkie die a coupler days ago since then my dachshund want poop he will pee but he want poop because he and my other dog did just about everything togather can you help me?