翻译成英文 :你可以像猪一样生活, 但你永远不可能像猪一样快乐

You can live as a pig, but you can never be happy as a pig.

猪狗不如的生活,应该是lead a dogs life.
所以,不能按中文直接翻吧.

Maybe you can lead a dog's life, but surely you won't be as happy as pigs are.

You can live a pig's life, but you can never as happy as it.

you can live like a pig,but you'll never be as happy as it is.

Living as a pig, never enjoying as a pig.

you may live like a pig, but you'll never be as happy as a pig
you may live like a pig, but you'll never be able to enjoy the happiness for a pig.