It is Nymphadora Tonks' and Remus Lupin's patronus. Nymphadora changed from 'unknown' to a wolf because she loved Lupin. Lupin is a werewolf, therefore it is quite obvious it is a wolf.
it was Snape's patronus
Hermione Granger's patronus is an otter.
Severus Snape.
Remus Lupin's patronus is a wolf, a regular wolf not a werewolf. He rarely cast a corporeal patronus, preferring instead just to produce a wisp of smoke, as he felt it gave too much away about him.
Remus Lupin's Patronus is a wolf. In "Harry Potter and the Prisoner of Azkaban," it symbolizes his connection to his werewolf nature and his struggle with the duality of his identity. The wolf Patronus reflects both his strength and his protective instincts, particularly towards his friends and students.
Regulus Black's Patronus is a doe. This is significant as it symbolizes his connection to his brother, Sirius Black, whose Patronus is also a doe, representing their shared loyalty and love for family despite their differences. Regulus's choice of Patronus reflects his transformation and the redemption arc he experiences in the story.
Patronus is a phantom of your best memory ever. You concentrate specifically on your memory and your patronus appears when the incantation is given. The Patronus is in the form of an animal representing feelings and your traits. For example Severus Snape changed his Patronus to a Doe to match Lily Evans, his love. Another example is Nymphadora Tonks whose Patronus resembles a werewolf creature, taking the shape from Remus Lupin her werewolf love.
That is related to the fact that he was in love with Lily Evans - whose patronus was also a doe.
Dumbledore's patronus was a phoenix. He used his patronus in Goblet of Fire, chapter 28 to send a message.
A patronus in snake form.
Her patronus is a swan.
Ernie's patronus was a boar.