People say that crows root through and scatter trash, and that they are so ominous that witches have them.

However, I think crows are clever, and cute.

It's said crows are as intelligent as much as 7seven-years old children, which is incredible considering that they are birds.

Besides, their eyes and walking style and eyes are pretty.

It sounds a little better when you change the order.

Personally, when I was struggling with studying for the university entrance exam, I often listened to a song that title iscalled ”Karasu", which means "crows" in Japanese, so I have an attachment forto crows.

"an attachment to crows" sounds old-fashioned, but I think it works here. The usage here sounds playful here to me.

However, I think crows are clever, and cute.

It's said that crows are as intelligent as much as 7-years -old children, which is incredible considering they are birds.

Personally, when I was struggling for themy university entrance exam, I often listened to a song that title is ”called 'Karasu"', which means 'crows' in Japanese, so I have an attachment fondness for crows.

You can say either 'I have a fondness for' or 'I have a liking for crows' - 'an attachment' sounds a bit off and can sometimes hold a negative connotation

I like crows, even though some people hate them.

People say that crows root through and scatter trash, and that they are so ominous that witches havekeep them (as pets).

"They are" is commonly written/said as "They're".
The "as pets" isn't necessary but it does clarify the sentence.

However, I think crows are clever, and cute.

You use a comma between adjetives when they come before a noun. For example:

The big, pink, and furry bunny jumped.

The slimy, green toad dashed away.

It's said that crows are as intelligent as much as 7-years old children, which is incredible, considering they are birds.

"They are" is commonly written/said as "They're".

Besides, both their walking style and eyes are pretty.

Personally, when I was struggling forwith the university entrance exam, I often listened to a song that title is ”Karasu", which means "crows" in Japanese, so I have an attachment special fondness for crows.