a large field rat

• 3937, -1059, 13 (2 of 3 spawns here)
• 4618, -828, 22 (2 of 3 spawns here)
• 4642, 160, -3 (seen once) (1 of 2 spawns here)
• 4477, -69, -19 (seen once)
• 4678, -632, 4 (seen once)
• 4579, -581, 43 (seen once)
• 4258, -510, 87 (seen once)
• 3996, -102, -24 (seen once)
• 2939, 369, 39 (seen once)
• 2337, -565, 3 (seen once)
• 1894, 165, 41 (seen once)
• 10, -307, -3 (seen once)
• -68, 928, -3 (seen once)
• 4484, 24, -4 (seen once)
• 3916, 15, 43 (seen once) (1 of 2 spawns here)
• 251, -404, -3 (seen once)
• -185, -452, -3 (seen once) (1 of 2 spawns here)
• 1146, 256, -1 (seen once)
• 2753, 380, 50 (seen once)
• 4444, -634, 39 (seen once)
• 4678, -923, 44 (seen once) (1 of 8 spawns here)
• 4788, -923, 42 (seen once)
• 4618, -392, 73 (seen once)
• 4688, -393, 62 (seen once) (1 of 2 spawns here)
• 4600, -478, 79 (seen once)
• -226, -606, -3 (seen once)
• 108, -256, -3 (seen once)
• 154, -391, -3 (seen once)
• 320, -200, -3 (seen once)
• 384, 16, -1 (seen once)

As /loc gives them: Y, X, Z, the most used first; nearby spawns share a spot, and one seen in a single visit may be where the mob had been pulled to.