No: Anubis is a ancient Egyptian god.
Most likely with hymns, festivals and the making of art and the building of temples to Anubis.
Anubis was born a god in ancient Egyptian religion, we do not know the start of his worship.
Yes, as Anubis was one of the ancient Egyptian gods, his cult center city was Cynopolis.
It is likely, given that the Old Kingdom of Egypt mentions Anubis, that the worship of Anubis in Egypt predates the Pharaoh ruling over Egypt.
The Egyptians worshipped Anubis as the god of mummification and the afterlife, believing he protected the dead and guided souls to the underworld. He was often depicted as a jackal or a man with a jackal's head, symbolizing his association with death and burial grounds. Anubis played a crucial role in ensuring the deceased's safe passage and weighing their hearts against the feather of Ma'at to determine their fate in the afterlife. His worship reflected the Egyptians' deep beliefs in life after death and the importance of proper burial practices.
There is unlikely to ever be a official "start date" for when the ancient Egyptian people started to worship or acknowledged the existence of Anubis as religion tends to be by word of mouth for a very long time before it is written down or depicted in art.
Anubis in ancient Egypt
They worshiped lots of gods such as Amon Ra, Horus, Osiris, Thoth, Anubis, Sobek, Shu, Isis, Nun, Geb, and many others.
'The Anubis' might refer to 'The Anubis Gates' (1983) a book or the TV series 'The House of Anubis'.
Anubis is the Egyptian god of death, he had a head of the Jackel. The mask of Anubis is probably just that, a mask of Anubis!
The consort of Anubis was Anput.