SCP-6700
"The Angry Dog"; Thaumiel; 100x100 wall with 7 layers thick mixed with silicon carbide and titanium; SCP-6700 is a dog that is 4 meters tall and 3 meters wide. he was found on XX/XX/XXXX, he was putting a grenade in his mouth and eating it, the grenade exploded but it did not hurt him in any way, shape or form. The foundation did experiments on the dog, and everything does not hurt him, after the experiment, he became very angry and killed 4 Foundation staff, 2 days later, SCP-6700 was placed in SCP-682's containment cell, after 30 minutes, SCP-6700 has removed 99% of SCP-682 and was still hurting SCP-682, then another 15 minutes, SCP-682 was neutralized. They then guide the dog back to its cell. Then after another 3 days, they found out that SCP-6700 is only a 6 month old puppy, and when it grows older, it could be class Apollyon, right now, Foundation personnel are trying to make SCP-6700 more happy.