Newspaper headline rules occasionally lead to syntatically ambiguous sentences [1], sometimes funny ones. In this case, the headline is a garden-path sentence [

Newspaper headline rules occasionally lead to syntatically ambiguous sentences [1], sometimes funny ones. In this case, the headline is a garden-path sentence [2]. Cutting out "to be" words (Mouse was filmed -> Mouse filmed) in headlines is called zero copula [3]. [1] https://en.wikipedia.org/wiki/Syntactic_ambiguity#In_headlines https://en.wikipedia.org/wiki/Syntactic_ambiguity#In_headlin... [2] https://en.wikipedia.org/wiki/Garden-path_sentence https://en.wikipedia.org/wiki/Garden-path_sentence [3] https://en.wikipedia.org/wiki/Zero_copula#In_English https://en.wikipedia.org/wiki/Zero_copula#In_English