We found 2 Reddit comments about Interstellar Pig. Here are the top ones, ranked by their Reddit score.
Not Interstellar Pig? https://www.amazon.com/Interstellar-Pig-William-Sleator/dp/0140375953
http://www.amazon.com/gp/aw/d/0140375953 Now I need to reread it. Holy crap. There's a sequel. http://www.amazon.com/gp/aw/d/0525469184/ref=pd_aw_sims_4?pi=SL500_SY115
Not Interstellar Pig?
https://www.amazon.com/Interstellar-Pig-William-Sleator/dp/0140375953
http://www.amazon.com/gp/aw/d/0140375953
Now I need to reread it.
Holy crap. There's a sequel.
http://www.amazon.com/gp/aw/d/0525469184/ref=pd_aw_sims_4?pi=SL500_SY115