The Arsenal boss has nothing but praise for the Colombia and Uruguay internationals and feels they are quite similar.
The Frenchman believes Falcao is slightly better in front of goal, whereas Cavani is more mobile, but he has stressed that both attackers are among the best in the world.
"I believe it's very difficult to make a difference because for me they are very similar. They have an animal aspect inside of them. Both of them are animals," Wenger told Bein Sport. "I think Cavani is a bit more mobile, and makes more runs off the ball, and Falcao is a bit more of a box player, a bit more of a killer than Cavani.
"But both of them, I love. And honestly, not to protect one or the other, but it's very difficult to make a difference between the two."
Cavani has netted two league goals since joining PSG from Napoli this summer, while Falcao has four goals in five Ligue 1 appearances.