My 15 year old Dachshund started vomiting in the last few weeks. It doesn't happen everyday, but when it does, the episodes can go on for hours. Last night he vomited a minimum of 11 times (mostly bile and water) until 2:30 in the morning.
5 Years ago he was diagnosed with an benign anal tumor, which was surgically removed. The tumor has returned and the vet wants to perform tests to see if he can survive another surgery. At 15 years old, I'm not sure I want to take the chance. Aside from the vomiting, he eats well, plays and seems happy.
Can the vomiting have anything to do with the tumor which recently returned?