What is 猫舅 in the following sentence?

Question

I assume this is a cultural thing that I am not aware of, but a friend just updated their status to say:

希望猫舅变成天使守护全家

Xīwàng māo jiù biàn chéng tiānshǐ shǒuhù quán jiā

Who or what is 猫舅?

Answer 1

My guess is:

Your friend might have some dogs, cats and other animals as pets. He might want to regard all these pets as a big family, to each member of which he might want to give a lovely nickname. For example, he might have:

猫舅， 猫姨， 狗外甥， 兔大姑

Answer 2

猫舅 in this sentence just means cat. it's become a slang to say 猫舅 when one just means cat.

also the following might be helpful too

猪爹(pig dad) - means pig

猫舅(cat uncle) - cat

狗老爷(dog grandpa) - dog

Answer 3

I don't know the word "猫舅". 舅舅 is used to refers to a brother of your mother. If one's mother is A, and she has two brothers: B and C,
he would call B or C "舅舅"

So I guess 猫舅 is used to call a brother of the cat's mother. In your example, you friend uses this word from a cat's view.