If it's 

@a

[download]

with an array, it's 

@{ $ar }

[download]

with an array reference, so it's 

@{ $AniType{cats} }

[download]

in this case.

Dereferencing Syntax
Reference Quick Reference

In reply to Re: copying array from a hash reference by ikegami
in thread copying array from a hash reference by Greg_R

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