| Business | Phone |
| Banfield The Pet Hospital 2861 S Service Rd, St Charles 63303 | (636) 947-4141 |
| Bogey Hills Animal Hospital 1997 Zumbehl Rd, St Charles 63303 | (636) 946-9395 |
| Canine Reproductive Tech St Charles 63304 | (636) 922-6000 |
| West Clay Animal Hospital 2705 W Clay St, St Charles 63301 | (636) 723-1290 |
| Veticare Animal Hospital 2757 Plaza Way, St Charles 63303 | (636) 949-9400 |
| Tender Care Animal Hospital 600 S Highway 94, St Charles 63303 | (636) 922-3360 |
| Tender Care Animal Hospital 6002 S Highway 94, St Charles 63304 | (636) 922-2325 |
| Tender Care Animal Hospital Highway 94, St Charles 63303 | (636) 922-2325 |
| St Charles Animal Hospital 980 N Kingshighway St, St Charles 63301 | (636) 723-2400 |
| Harvest Plaza Animal Hospital 4135 S Old Highway 94, St Charles 63304 | (636) 447-7200 |
| First Capitol Animal Hospital 804 1st Capitol Dr, St Charles 63301 | (636) 724-3200 |