Would I risk my life: Depends. If I consciously knew that I could die, then I would chicken out. If I’m unaware of the danger, then I will try to help it.
Treat like family: Probably not. I’m pretty bad with pets, and I would release it to the wild if I could. Adopting a Pokémon would grant me fame, but also cause me to be a freak in societies eyes. The Pokémon would also be taken away by animal control or other facilities for testing and research. If I brought a Pokémon home, my parents would, rightfully so, flip out.
What Pokémon would I want it to be: Something inconspicuous like a Lillipup, Eevee, Klefkey, Pidove, Pidgey, or Raticate. This is so I wouldn’t bring unnecessary attention to myself.