Early in Harry Potter and the Half-Blood Prince, Harry observes Nymphadora Tonks casting the Patronus Charm:

As Harry swung the cloak back over himself, she waved her wand; an immense silvery four-legged creature erupted from it and streaked off into the darkness.

"Was that a Patronus?" asked Harry, who had seen Dumbledore send messages like this.
- Harry Potter and the Half-Blood Prince (Chapter 8 - Snape Victorious)

Due to a comment by Snape, Harry determines that Tonks's Patronus must have changed forms recently, and he asks Lupin about it:

"Tonks’s Patronus has changed its form," he told him. "Snape said so, anyway. I didn’t know that could happen. Why would your Patronus change?"

Lupin took his time chewing his turkey and swallowing before saying slowly, "Sometimes … a great shock … an emotional upheaval …"
- Harry Potter and the Half-Blood Prince (Chapter 16 - A Very Frosty Christmas)

However, at no point does anyone identify what Tonks's Patronus used to be.

What form did Tonk's Patronus take before it changed?

  • As far as I can tell, the only place on this site that had this information was a comment on an answer to a related question: scifi.stackexchange.com/a/172784/59105. I'm self-answering to put it in a more permanent form. – Lucas Y. Feb 23 '18 at 20:39

Pottermore's article on the Patronus Charm, written by J.K. Rowling, answers this question:

The form of a Patronus may change during the course of a witch or wizard’s life. Instances have been known of the form of the Patronus transforming due to bereavement, falling in love or profound shifts in a person’s character. Thus Nymphadora Tonks’s Patronus changes from a jack rabbit to a wolf (not a werewolf) when she falls in love with Remus Lupin.

Therefore, Tonks's Patronus Charm took the form of a jack rabbit.


I think it was a mouse or rabbit because it says something of the sort in the Half-Blood Prince. I'll check now, but I'm fairly sure it was a quadruped. --So I'm back. The new one's a wolf. I don't know what the old one was.

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    Hi, welcome to SF&F! Since this doesn't answer the question, you might consider deleting it. For more information on what's expected of an answer, you should consider taking the tour – DavidW Nov 10 '18 at 1:36

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