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Mr Taylor, who has written about Scottish personal names and place-names, said there was a good practical reason behind the tradition.

There’s probably some very practical reason for it, like funding, but it’s really lovely.

Many real-life animals known as hematophages that sustain themselves on blood for a more practical reason — survival.

So there’s a practical reason there.

Mr Brown added: "Bearing in mind the person said they don't keep to the consent procedure because of practical reason, it is not a big leap to say there's lots of other people involved."