Jackol
· Jawfish · Jewelfish · Jewfish
Jellyfish, jumping spider
Joey from War Horse
Extinct animals that begin with the letter J would include the Japanese River Otter, the Japanese Sea Lion, the Javan Tiger which was native to Indonesia and Jefferson's Ground Sloth which were native to the USA and Canada.
Jack rabbits
Jack
Jackol
· Jack Rabbit
Jelly fish
Only King Julien,
Sorry there are none
jaguars, jerboas
quail
jellyfish
· Jawfish · Jewelfish · Jewfish
Jellyfish, jumping spider