Javanese is a breed of domestic cat. Jay is a bird. Japanese beetle is an insect.
Jackol
Jellyfish, jumping spider
· Jawfish · Jewelfish · Jewfish
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
The first whole number that contains the letter "j" is "j" in the word "ten." However, if you are looking for a numeral representation, the first whole number that contains the letter "j" when spelled out in English is "ten."
jellyfish
Jelly fish
Only King Julien,
jaguars, jerboas
quail
· Jawfish · Jewelfish · Jewfish
· Jack Rabbit
Sorry there are none