The tongue might be rigged as a prop with embedded geometry, so it's available while the separate OBJ isn't available.   I'll bet you can find something that looks like this in the CR2:

prop tongue
        {
        storageOffset 0 0 0
        geomCustom
                {
                v -0.058140 0.146280 -0.317380
                v -0.058140 0.146280 -0.317380
                v -0.058140 0.146280 -0.317380
                v 0.058140 0.146280 -0.317380
and so on.

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