A properly constructed 5½- to 6-foot mesh wire fence should have horizontal spacing of less than 6 inches and vertical spacing of 2 to 3 inches. It should have barbed wire at ground level and barbed wire, electric wire, or wire overhangs on top to help deter predators that will climb or dig under fences.
Multiple strands of single-wire electric fencing can cost less than new mesh fencing. Seven or nine strands of high-tensile smooth wire, with alternating charged and grounded wires (beginning with a charged bottom wire) can help reduce predation.
Adding electric wires at the top and electric trip wires to the bottom and middle of a mesh fence that is in good condition can help make it an effective predator barrier and is probably more cost effective than replacement. An electric trip wire placed about 6 inches off the ground and 8 inches outside the woven wire fence will help prevent predators from digging under it. Electric wires added to the top and at various intervals along the woven wire fence will help discourage predators from climbing or jumping the fence.
Babydoll lambs are really small! Although sheep have a flock mentality and likely a lamb will not stay from the flock, you still need to be mindful of the creatures that can get under the gates.
Funny (to me) story - I have caught (in a fishing net) 3 sick raccoons in our paddocks with our sheep.
Gates with square corners keep the special animals in and the other things out!
Use this link for more details; https://attra.ncat.org/attra-pub/download.php?id=189
We have not lost any animals to date from predation. We believe that is in part due to the fencing we have in place. We also employee a Livestock Guardian Dog to patrol the fencing from within.
I have heard it said that you can graze 2-3 Babydolls on 1 acre of land. There are lots of variables there however; quality of grasses in your paddock, how quickly the grass grows (our land lies low so it is wet most of the spring, meaning our grasses don’t start growing until early summer), the weather, etc.