The Animal Cognition logo combines the tree of life with a neurological network. The tree of life is drawn from current data obtained from the Tree of Life website, however, the relationships between different organisms are subject to change.
In the tree of life below, all organisms starting from Porifera
(Sponges) belong to the Animal Kingdom. Only the Porifera (and possibly
the Placozoa, which are not very well understood) do not have nerve
cells.
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