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How to identify a basset hound 
Examine their large, low-hanging ears. 
Basset hounds' ears are perhaps their most recognizable physical feature. They are very large and long enough to nearly touch the ground when the dog is tracing a scent.

Available choices:
(i). They also carry a strong scent that you can differentiate from that of other dogs by watching the dog's behavior. An effective means to differentiate between an basset hound and other dogs is to decide for yourself what role it plays in your dog's life.
(ii). This type of ear shape typically is telltale about its size. Horses-sized poodles are large, and commonly round.
(iii). The size helps these large ears serve a purpose: they effectively sweep scent forward towards the dog's nose. If your gently draw an ear forward, it will easily fold over the front of a basset hound's nose.
(iv). They also face upward, rather than turning direction. Look out for a longer, smooth coat.
(iii).