Panettiere fortalte ''E! News'' , at der var blevet udsendt en arrestordre på hende i Japan på grund af konfrontationen <ref>[http://www.nzherald.co.nz/section/1501119/story.cfm?c_id=1501119&objectid=10476470 ''Japanese arrest warrant issued for 'Heroes' star Panettiere'']. New Zealand Herald.co.nz. 16 November 2007.</ref>. I november 2007, fik hun en "Compassion in Action Award" fra dyrerettighedsgruppen [[People for the Ethical Treatment of Animals|PETA]] for hendes forsøg på at stoppe delfinjagt i Japan <ref>[http://getactive.peta.org/campaign/p2_hayden_dolphins ''Hayden Panettiere, Hero to Dolphins''] {{Webarchive|url=https://web.archive.org/web/20071112093911/http://getactive.peta.org/campaign/p2_hayden_dolphins |date=12. november 2007 }}. Peta.org.</ref>. Hun er også [[vegetar]] <ref>{{Citation |last=Begum |first=MUMTAJ  |title=Pint-sized power |url=http://www.star-ecentral.com/news/story.asp?file=/2008/1/18/tvnradio/20010306&sec=tvnradio |publisher=[[The Star (Malaysia)|The Star]] |date=2008-01-18 |access-date=2008-02-08}}</ref><ref>[http://www.cosmopolitan.com/celebrities/exclusive/hayden-panettiere-interview Cosmopolitan interview]</ref>.
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