Re: Did dinosaurs get cancer?

 Cancer is an abnormal/uncontrollable cell division which may be 
 caused  by certain viral infections and certain chemical agents called 
 carcinogens.
 After industrialization, we the human beings have introduced a lot of such
 carcinogens into our environment. Such carcinogen were absent in the 
 period when dinosaurs were alive!

 If at all they get, dinosaurs might have got cancer due to viral 
 infections.
 
 Also read my answer to the question "are animals that haven't evolved much
 less likely to get cancer?". (ID: 975599440.Ev)