Hi Bia Most dogs will sit if you just stand in front of them so they look up at you. Easier to sit than stand when they are so small. You can also take a bit of food and bring your hand close enough to their nose without them having to jump up and move your hand slowly back towards their rear end. They usually sit.
Robyn Icelandic Horse Farm Robyn Hood & Phil Pretty Vernon BC Canada www.icefarm.com