What focal length or length's for a animal preserve

I hate to ask this but here it goes'.Has anybody ever been to the wildlife connection in minnesota, or Seacrest a wolf preserve in florida.

What focal length would be best,i was looking at zoom telephoto's in 70-200 range would i need IS or faster shutter speed.I think my budget would be less then 2000K but not much:p.

i was looking at 70-200 f4L IS, 70-200 2.8L IS, 100-300 sigma i rather stay with canon, or 70-300 IS i love the internal zoom's better.

I have a 400 5.6L prime right now but i want to put more into the frame with the animal,even with a TC on the 70-200 will i miss 120 + zoom?.
If any of you been here please tell me what i need for this preserve.Thanks Sean .L

Does anybody have any suggestion's.I need the POTN pro's help:p,i guess no body want's me to spend any money.Sean .L

The 70-200mm and 100-400mm zooms are great for zoos, parks, preserves, etc. You can almost never have too much reach, especially for small animals/birds.

Double Negative wrote in post #5834616
The 70-200mm and 100-400mm zooms are great for zoos, parks, preserves, etc. You can almost never have too much reach, especially for small animals/birds.

Thanks for the reply im thinking about the 70-200 f4 IS with a 1.4 TC 280mm 5.6.Sean .L