In a large bowl, mix warm water, yeast, and sugar. Let sit 5–10 minutes until foamy.
Stir in melted butter and salt. Gradually add flour until a soft dough forms.
Knead dough on a floured surface for 5–7 minutes until smooth and elastic.
Place dough in a greased bowl, cover, and let rise for 1 hour or until doubled.
Preheat oven to 425°F (220°C) and line baking sheets with parchment paper.
Divide dough into equal portions and roll each into a long rope.
Shape ropes into bunny faces with looped ears.
Bring a large pot of water to a boil and add baking soda carefully.
Dip each pretzel into the water bath for 20–30 seconds, then transfer to baking sheet.
Brush with egg wash and sprinkle with coarse sugar or pretzel salt.
Bake for 12–15 minutes until golden brown.
Cool slightly before serving.