Yes!!! The way you take care of your tama does depend on what it evloves into. Also, the skill points you accumulate, if you have version that involvles skill points, help decide what your tama will be when it grows up. You can look at a growth chart to see what kind of skill points you need to turn a tama into a certain adult. Go onto google images and google v4 growth chart, or v4.5 growth chart etc... I would like to give you a link, but I'm having trouble with links on my computer right now.
hope this helps!!!