A kitten on the road ("Kitty" is a childish word. The term for baby cat is "kitten.")

I saw a kitten of the road on Sunday.

The kitten was very cute, but I felt sorry for it.
Lately, almost many people seem to be throwing their pets away to their pets.
Therefore, the pets were end up starving and ate eating garbage.
Consequently, they got acquire diseases.
I'm so mad with angry thinking about their situations.
And I don't understand what some people's behavior, because I think that raising to a pet is the same to as taking care of a baby.
So We must not raise to pets if we want to leave them alone.
I want to care of for pets I find on the road streets, but I'm very busy.
Thus, they will leave alone again.
I want to do something for pets on the road streets, but I can't find the best solutions.
What should I do for them?

Hi Suji, I can't offer you any solutions for how to help pets you find on the streets, but I hope my corrections will help you with your English. Please let me know if you have any questions =)

A kitty on the road

I saw a kitty by the road on Sunday.
The kitty was very cute, but I felt sorry for it.
Lately, most people have been throwing away their pets.
Because of this, the pets starved and ate garbage.*
Afterwards, they got diseases.
I'm so mad with their situations.**
And I don't understand people's behavior.
I think that raise to pet is the same as taking care of a baby.
We must not raise pets if we're just going to leave them alone.
I want to take care of the pets on the road, but I'm very busy.
Thus, they will be left alone again.
I want to do something for the pets on the road, but I can't find the best solution.
What should I do for them?

Notes:

 *Be careful using long words. English can be tricky this way as "therefore" had the right meaning but the wrong feeling... it wasn't exactly right, though it was very close.

 **Technically correct but "Their situation makes me so mad" would flow better.

***There are two ways to write "care". You can write "to take care of" or "taking care of" OR you can write "to care for" or "caring for". So... to take care of a baby, taking care of a baby, to care for a baby, caring for a baby. Most of the time any of those options will work, you just need to remember the grammar and make sure you include whatever "to", "-ing", "of", "for", etc is necessary. I apologize for how tricky English can be... :/

A kitty on the street

I saw a kitty on the street on Sunday.
The kitty was very cute, but I felt sorry for it.
Lately, a lot of people threw away their pets.
Therefore, the pets starved and ate garbage.
Consequently, they got diseases.
I'm so mad about their situations.
And I don't understand people's behavior.
Because I think that raising a pet needs the same level of care as a baby.
So we must not raise pets if we are going to leave them alone.
I want to take care of the pets on the street, but I'm very busy.
Thus, they will be left alone again.
I want to do something for pets on the street, but I can't find a good solution.
What should I do for them?