How have national penal codes changed on bestiality worldwide since 2015?

Checked on January 5, 2026
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Executive summary

Since roughly 2010 and continuing through the 2010s, a patchwork of national legal changes has tightened prohibitions on sexual acts with animals—often reframing such acts from obscenity or “crimes against nature” to explicit animal-welfare or anti-bestiality statutes—and several European countries and U.S. states updated codes to ban or clarify prohibitions [1] [2]. Reporting indicates an uneven global pattern: many wealthy democracies moved to close legal gaps, while in other jurisdictions the practice remains governed by older or broader animal-cruelty or sodomy statutes [1] [2].

1. Legal tightening in Europe and select democracies

A visible trend since the 2010s has been explicit bans or clarified prohibitions in European countries and elsewhere: Germany, which had allowed sex with animals unless the animal suffered “significant harm” after a 1969 rule, moved in the 2010s to ban bestiality more clearly [2], and multiple reports list Sweden, Italy, Iceland and Denmark among countries that have updated laws against sex with animals in the 2010s and early 2020s [1]. Media coverage framed these moves as part of animal-welfare modernization, with parliamentary debates explicitly intended to close legal loopholes that left unclear protections for animals [2].

2. United States: state-by-state patchwork and recent activity

In the United States the shift has been incremental and state-driven: by 2023 many states had enacted explicit anti-bestiality statutes and most prohibitions were adopted between roughly 1999 and 2023, leaving a minority of states with older statutes or gaps; certain states including New Hampshire and Ohio enacted new laws in recent years as part of that wave [1]. Reporting summarized that as of 2023 bestiality was illegal in 49 U.S. states while remaining legal in West Virginia, and that statutory histories vary widely—from modern statutes to provisions originating in the 19th century or earlier [1].

3. Shifts in legal framing: from moral offense to animal welfare and public standards

Analysts and source material note an ideological and legal reframing: older laws often treated bestiality as an offense to public decency or “crimes against nature,” whereas many post-2010 reforms position the act primarily as animal cruelty or a welfare violation, or create stand-alone bestiality offenses aimed at protecting animals and public morals [1]. This reframing changes prosecutorial tools and penalties, and in some jurisdictions narrowed defences that relied on vague notions of “significant harm” to animals [2].

4. Gaps, controversies and countervailing narratives

Coverage also highlights controversies: legal reforms are sometimes reactive to high-profile incidents and campaigns by animal-rights groups, and in a few places the existence of commercialized “erotic zoos” or social tolerance has complicated enforcement narratives [3] [1]. Some reforms have faced constitutional or procedural challenges—for example a German 2013 law was unsuccessfully challenged before the Federal Constitutional Court in 2015 according to a summary of legal history [1]. Sources do not provide a comprehensive global tally post‑2015, so conclusions about worldwide completeness are limited by reporting scope [1].

5. What reporting leaves unquantified and why it matters

Available sources provide examples and national highlights but do not offer a definitive, up-to-date global database of every penal-code amendment on bestiality since 2015; Wikipedia summaries and journalistic accounts list many countries that changed laws and many U.S. state actions but acknowledge varied statutory histories and enforcement practices [1] [2]. Because the evidence set here is partial, it is accurate to say the dominant pattern is toward criminalization or clarification in many jurisdictions, without asserting that every country followed that path or specifying exact dates and texts for each national change [1].

6. Stakes, actors, and likely next steps

The main drivers identified in reporting are animal‑welfare advocates, lawmakers responding to publicized cases, and broader criminal‑law modernization efforts; opponents or skeptical voices (when present) raise concerns about overcriminalization, evidentiary complexity, or cultural/legal variation—points underscored by patchwork enforcement and historical statutes in many places [1] [3]. Given the trajectory reported across Europe and the U.S. states, further clarifying legislation and prosecutions framed on animal-protection grounds are the most likely near-term developments, though a full global accounting is not available in the sources provided [1] [2].

Want to dive deeper?
Which countries still lack explicit anti-bestiality statutes as of 2025?
How have animal-welfare NGOs influenced parliamentary reforms on bestiality in Europe since 2010?
What legal defenses and evidentiary standards are used in recent bestiality prosecutions in U.S. state courts?