Y'all are both wrong. He had his dog put down before he killed himself to save her from being tortured by the Russians... and he didn't hate cats; he was a total animal lover (not so much a people lover though apparently)... I love the poster!
I hate to run around correcting people, but your wrong. While Hitler Hated cats he did not intentionally kill his dog. He was given cyanide capsules and stated because his doctor had left the country, that they were fake. To prove it he fed one to his dog