B: My child wants it, but I think I still have a lot of thigs ahead to take care of her because she is still a small child. Additionally feeding the dog, cleaning its house and walking it may fall on me.
犬欲しい？て聞かれて、子供は欲しがっているけど、まだ子どもに手がかかるから考えてない。餌をやるのも私、犬小屋を掃除するのも私、散歩するのも私。たぶんそうなると思う。
A: Do you want a dog?
B: My child wants it, but I think I still have a lot of thigs ahead to take care of her because she is still a small child. Additionally feeding the dog, cleaning its house and walking it may fall on me.
子供一人 a child
（先に）沢山することがある have a lot of things ahead
世話する take care of, look after
さらに、additionally
餌をやる feed ~
散歩に連れてく walk ~
わたしにかかる fall on me
日本 
