Maximum Weight — Odontoceti (Dolphins)

Among dolphins, the bottlenose dolphin and Risso’s dolphin share the title of heaviest, both reaching 500 kg. Fraser’s dolphin ranks second at 210 kg, while the common dolphin is the lightest at just 135 kg. Compared to Odontoceti whales, dolphins are considerably smaller, but the size variation within the group is equally significant — the bottlenose dolphin weighs almost four times more than the common dolphin.

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How much do dolphins weigh? Compare maximum weight across 7 species, from the 135kg common dolphin to the 500kg bottlenose and Risso's dolphins. (147 chars)

References (with hyperlinked sources)

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