Help me to choose from pet or longboard!?

This is hard for us to answer because we don't know how much you love both. I'm guessing you ahve to love one more than the other but here is something you need to consider. The one thing about pets is that they are an ongoing cost. And, since you say you can only afford one, do you really want to take on this cost. There is food, medical, and not to mention that you will need to walk it, take care of it, play with it, etc. If you are working, that gets harder to do. I think dogs are great but under your circumstances, i would stick with the longboard.

Get the board, keep animals free. Pets cost lots of money to upkeep and take care of. Plus you'll be taking care of the pet and won't have time to surf.