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Agglomerative hierarchical clustering

Earlier this year, my AI lecturer taught us about agglomerative hierarchical clustering, and K means clustering, but his explanations are lost, and I'm trying to figure out how he uses the data in the table below to create a dendogram. It would be great.

enter image description here

He gives the following table that describes the similarities:

   Animal pairs          Similarities
Bear & Tiger                  4
Bear & Dog                    3
Bear & Giant Squid            2
Bear & Cat                    3
Tiger & Dog                   2
Tiger & Giant Squid           1
Tiger & Cat                   2
Dog & Giant Squid             2
Dog & Cat                     5
Giant Squid & Cat             2

And the resulting dendrogram from the table above: enter image description here

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1 answer

Always connect the most similar ones.

Dogs and cats are most similar, and therefore they are connected to level 5.

The bear and tiger are connected to level 4.

and etc.

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