Question

why do dogs sniff here and there​

Answer 1

Answer:

Because the odor is unique to every dog, two dogs can quickly determine if they've met before." Dogs sniff butts as a form of greeting and obtain vital information from the anal secretions. ... And because the odor is unique to every dog, two dogs can quickly determine if they've met before

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Answer 2

Answer:

because the odour is different

Explanation:

two dogs can quickly determine if they've met before." Dogs sniff butts as a form of greeting and obtain vital information from the anal secretions. ... And because the odor is unique to every dog, two dogs can quickly determine if they've met before.