Sign dog by patting your outstretched hand with fingers together on the side of your hip, just as if you were calling the dog.
In proper ASL, the patting of the hip is followed by bringing your hand up and clicking it or snapping your fingers. We don't do this second step with Baby Sign Language because clicking is a bit too complicated for babies.
If you have a dog, teach this as one of the first fun signs. Babies and dogs both seem to love this sign. The sign for dog is always good for a couple of tail thumps from our faithful hound.
If you don’t have a real-life dog, you can use the dog flash card to teach your baby the sign. “Wooof … It’s a dog!” You can also teach this sign if your baby has a dog plushie, or when you're shopping in a toy store or are out in the park. Baby will get to see dog in many shapes and sizes as you reinforce the sign each time you encounter a different breed of dog.