What's this? Mama finds a terrible DOG has the baby in its clutches! What to do? Tail up! ATTACK!
EN-GARDE!!! With no fear, mama jumps the beast.
And gives it just enough what-fer to make her a bigger item to deal with. "Hey! GET OFF ME!" With dog distracted, the little one scampers.
And when it's over, mama helps the little one away - while the dog is left wondering... WTF JUST HAPPENED!?