I had been wondering what the lump on his back leg was ever since I got him last year. So when we were at the vets for his spring heartworm check and perscription I asked. Turns out it's a mast cell tumour - cancerous and needed to be removed. Yesterday I took him in yesterday morning, was expecting to pick him up after work. Called at 5:30 pm and they said another hour. 8:30 pm and still no call, I found myself panicing a little, imagining he'd died on the operating table and they weren't going to tell me. Turns out they were short staffed, so I got him later in the evening, and he's home recovering.
For a while after I got him I was worried that we weren't bonding - guess I'm over that!