Yes, I think it is probably slug damage.
I picked up a bulb when walking my dog on the beach. It looked like a daffodil bulb, had a few stunted leaves showing so I planted it and waited with bated breath to see what glorious treasure I had found. Hah! A bud formed and was not far off breaking when it was demolished, just below the flower head and above the top of the stem. Now I have to wait 12 months to see what it is.