Some Japanese pet's have become well known on the internet and have a lot of fans around the world. The oldest and most famous one would be MARU, a male cat who likes to jump into empty boxes. He even has a Wikipedia page.
Next one will is also named "MARU", but is a male shiba dog. He has 1.6 million followers on his Instagram account ("marutaro"). "MARU" is not such a popular name for pets, so it is interesting that they have same name "MARU". "MARU" means round in Japanese, They were so called because of their round faces or round butts.
A recent new comer is a mixed breed male dog named "KUMA". He has very long and smooth hair, so you can see his various cute hair styles on his instangram.