2 year old long haired dachshund mix

Ellroy is 2 a two year 10lb old neutered male. He is a sweet guy. Loves to play hard with his large breed big brothers. Loves to snuggle. Sleep in his kennel and goes straight in at bedtime. Walks well on a leash. Hates vacuums. Ellroy is house trained. And is great. 99% of the time. But ia too worried when he is playing and has poop accidents then. Never pee accidents. This is why we feel he would do better being an only dog.