No.
At least, it may do, but if it does, it is certainly also mistaken. The reason for this is that the UK Parliament has used a variety of definitions for an animal throughout time, not all of which can be true simultaneously. Perhaps more troublingly, this variety of definitions persists across UK laws. That is to say, different laws have different accounts of what an animal is.
There are a variety of reasons to be concerned with this.
One of which is a reason of equity; whatever animals are, they should be treated and protected consistently under law, and not advantaged or disadvantaged due to variation in accounts of what animals are in law.
One does not need to be an animal lover to appreciate the importance of equity in the law. One simply needs to imagine case where the law is applied in an unfair manner to see the value of equity in law.
Another reason for concern is that the UK Government has significant power. This is not necessarily in and of itself a concern; however, the power does point to the importance of such power being wielded precisely. Therefore, instances such as this raise broader questions about where citizens’ lives are being arbitrarily advantaged or disadvantaged due to a lack of precision on the part of current and previous governments.
A letter published on 3February 2026 by the Animal Sentience Committee (ASC), highlighted the variation in the definitions of animals in UK law.
The Animals (Scientific Procedures) Act 1986 does not include decapod crustaceans; similarly, the Welfare of Animals at Time of Killing (WATOK) Regulations do not include cephalopods and decapods. This results in those animals lacking protections which are afforded to other animals. Moreover, this stands in contrast to the more recent Animal Welfare (Sentience) Act 2022, in which cephalopods (such as octopuses, squid, cuttlefish) and decapods (such as crabs, lobsters, crayfish), are acknowledged as sentient.
If we accept the most recent account of sentience, then we are in a situation where the Animals (Scientific Procedures) Act 1986 and the Welfare of Animals at the Time of Killing Regulations are failing to protect some sentient animals. Again, there are reasons for concern with this, some of which are deeply grounded in concern for animal welfare, and other reasons which have nothing to do with animal welfare but are concerns of equity and the fair application of law.
To be fair to Parliament, our understanding of things may change over time, depending on variables such as scientific evidence. It may be that the Animals (Scientific Procedures) Act 1986, reflected our best understanding of what an animal was at the time.
Yet, if our understanding of terms can reasonably change over time, then does there need to be further safeguards to ensure Parliament updates terminology consistently to reflect our best understanding of the world?
Or maybe that is exactly what has happened? The ASC has published their letter, and the Government might correct this inconsistency shortly – time will tell.