Use a #10 blade for sanitary cuts. Just trim around the poopie & wee wee areas, you can use blunt nosed scissors.
The inner thighs, underbelly & arm pits are also shaved during sanitary cuts as these are high rubbing areas & tends to mat. Since these areas are sensitive for them it's best to keep it trimmed.
https://www.youtube.com/watch?v=MHR329QrAq0