We quote from a centennial anniversary writeup about the Titanic's resident mouser.
The Titanic apparently had her own feline mascot, a ship’s cat that stewardess Violet Jessop said was called Jenny. While the ship was being loaded at Southampton, Jenny presented her keepers with a litter of kittens. Versions of the fate of this new family vary.
According to one, they died when the Titanic went down. According to another report, when the ship docked at Southampton, Jenny calmly transported her kittens off the doomed ship, one by one, and left for a new life.
An Irish crewman who had been assigned to look after the cats took that as a bad omen and also left, claiming the cats had saved his life.
Probably there is little basis for the story of Jenny's leaving early. However, no one else has mentioned THIS undeniable fact: The Titanic was not Jenny's home ship. That was the Olympic. She may have just not understood she was supposed to stay in this new strange smelling ship, and keep on hunting rats. By the time the ship got to Southampton, from Belfast, She may have been trying to find what she thought was her home, this other ship. Or, she may have felt the dogs presented a threat to her kittens. But it is all surmise.
The rescue ship, the RMS Carpathia, was attacked by a German sub on July 17, 1918, in an engagement off Ireland. Five lives were lost when the Carpathia sank.