Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to identify a sussex spaniel [title] Assess the dog's face. [step] Looking at facial expression of the sussex spaniel is important for identifying the breed. Overall, the dog has a somber and serious expression, although this does not express its actual personality.

Ending1: The sussex spaniel's nose is wide open and often slightly raised. However, this is not the only nose characteristic that the sussex spaniel has. Ending2: The sussex spaniel has a rounded face and a straight nose. Its muzzle/chin is square with rounded sides. Ending3: It has heavy eyebrows, which are the key feature that creates this frowning expression. [substeps] The dog's eyes are large and hazel colored, with a soft and passive expression. Ending4: [substeps] Sussex spaniels are typically two-faced. This means that their faces may have a white or bluish color, while still having deeper colors around the eyes, noses, and lips.

Answer format: ending1/ending2/ending3/ending4