My parents have one old dog, Rafi, and one new dog, Jut. Rafi is a Rhodesian Ridgeback
- a big African dog. Rafi knows many signs - "come", "stop", "up" (but done like "upstairs" to get him to stand on his back legs). He also knows hand commands that aren't signs: "sit" (dominant palm up), "down" (dominant palm down), and "rollover" ("drive" sign). My dad taught him with dog treats. He is not friendly to strangers, but so sweet with me and my family.
Jut is a Great dane
. He is giant, sweet, and stupid. He knows signs and hand commands, but just sleeps on sofa, carpet, and beds. He loves all.
And both jump and bark with "dog" sign and bark more with "more" sign - I taught them.