宠物的益生菌哪个好？
养宠物的人应该对益生菌不陌生，我们喂养的狗狗、小猫，还有兔子、乌龟等冷血动物，它们的肠胃其实跟我们的肠胃是一样的，也会有问题，也需要调理，最近宠物市场上出现一种“宠物益生菌”，那么这种所谓的“宠物益生菌”到底有什么功效呢？它真的能治疗宠物腹泻和便秘吗，还是商家又有了一个新的卖点了？
对于这个问题，我们有请宠康宠物医院院长吕青先生给出解答：
宠物益生菌就是补充宠物的胃肠道菌群，维持其数量和平衡，帮助消化吸收，提高生长发育率，增强体质，提高免疫力。用于宠物因菌群失调引起的消化不良，食欲不振，腹胀便秘，腹泻，消瘦厌食等症状。益生菌是活着的，有生理功能的，对身体有影响的微生物。
市面上的益生菌，功效差不多，都是补充人体肠道内的菌群，维持正常菌群的生长和繁殖，有助于改善胃肠道功能，对腹泻、便秘有防治作用。但购买时一定要注意区分，有些是冻干粉，这是无法保证活性的，建议选择粉剂冲泡的，这样效果更有保证。
为下面的文章写一篇50-70的英语作文
Nowadays more and more people chose to keep cats and dogs as their pets. But some controversies stay in our hearts.It is a good thing to keep pets? Or it is a bad choice?
On one hand， pets are like members of our families. When we get bored， they can play with us and make us laugh.What’s more， they can console(安慰)us and give us a warm. In a word， pets are like our good friends who work for people.
On the other hand， it’s a big trouble to take care of pets.It requires(要求)a lot of time， energy and money of course. We will spend a lot of time in communicating with our pets and taking walks with them every day.What’s more， they need a beautiful(漂亮的) and clean home.You have to pay for the food and healthcare of them.
In my opinion， it is all up to us.If we are busy enough and have no time for dogs and cats， we had better not to have pets. But if we have good time and love dogs and cats， keeping pets will certainly be a nice and interesting experience for us.