Following public exposure of the psychological trauma suffered by captive orcas, major entertainment corporations have phased out orca breeding programs and theatrical performances.
To engage with this topic, one must first distinguish between these two pillars of advocacy. Singer doesn't need to argue that a pig has a "right to life
Animal rights is a moral and legal philosophy that argues animals should have fundamental rights Bans barren battery cages, cosmetics testing, and gestation
Singer’s approach leads to similar practical conclusions as Regan’s (veganism, abolition of factory farms) but for different reasons. Singer doesn't need to argue that a pig has a "right to life." He only needs to argue that the pig’s suffering outweighs the human pleasure of a pork chop. For this reason, Singer is often called the father of the modern animal liberation movement, while Regan is the father of the animal rights movement. Bans barren battery cages
Recognizes animals as "sentient beings" under the Treaty of Lisbon. Bans barren battery cages, cosmetics testing, and gestation crates.