We have two bassett hounds that share a large crate at night. For the last week, one of them as been waking up at 4:30 every morning. She wakes her sister up and barks until we let her out. This morning she barked for 30 minutes until we finally gave in. We let her go to the bathroom and put her back in the crate. She continued to bark until we gave in a feed her over an hour earlier than normal. We are exhausted and don't know what to do! Please help!