"PETA offers $100,000 carrot to @NRA in exchange for animal-friendly reforms like kicking these gormless pathetic twits off membership roles," PETA's president tweeted with a photo of Trump's eldest sons.
Controversy remains over its orca programme.
"Deport callous cheating opportunists now! All nations have their undesirables," the PETA billboard states.
The suspect was photographed at a PETA demonstration, but she doesn't appear to have any strong connection to animal rights or welfare organizations.
The corporation sells dead cats, pigeons and sharks.
Public schools purchase the animals for dissection.
110 million people visit cruel wildlife tourist attractions each year, oblivious to the animal abuse involved.
Sports hunting is the pursuit of sociopaths who enjoy causing pain and lack the self-control to stop themselves hurting others.
A petition for the sport to be included in the Olympic Games has been launched.
A soldier fired a single pistol shot when the escaped animal, despite being tranquilized, approached the soldier, the army said.
But his owners say the bull is already used to large crowds.
Animal rights activists criticize Ringling Bros. retirement facility and the use of elephants in smaller circuses.
They have demonstrated against the fashion brand's use of ostrich leather.
SeaWorld says employees spied on activists to protect staff, customers and animals in the face of "credible threats."
Robert Durst also once beheaded a human, but was acquitted of murder charges.
Animal rights group, People for the Ethical Treatment of Animals, objects to the inclusion of a SeaWorld float in the annual parade.