Snail-eating slender beetle (Carabus blaptoides fortunei, left) and stout beetle (Carabus blaptoides capito, right). Slender beetles can eat snails by inserting their heads into the shells but cannot ...

Snail-eating slender beetle (Carabus blaptoides fortunei, left) and stout beetle (Carabus blaptoides capito, right). Slender beetles can eat snails by inserting their heads into the shells but cannot ...

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