Dogaressa is the paired card to Dogamy, if placed after him her Magic will activate adding 3 HP to her stats. If placed before however it will not activate. It is recommended you place this card second if you have both in the deck as Dogamy has higher health and thus will likely last longer, giving Dogaressa more of a chance to have their Battlecry activate.
Useful as a cheap decoy to draw the opponent's attention. Good in Integrity based Dog Decks.