I am about to do an oil change before the winter and looking to check out the grease nipples to ensure that everything is good before the snow hits. I can't seem to find the location of the grease nipples on my 2006 Kia sportage

These days, you tend to only find them on trucks. If you install aftermarket parts (e.g. tie-rod ends and lower ball joints), they may have zerc fittings.