Dark Horizons has posted word on a possible scene from Blade: Trinity.
“Seems there will be Rotweiller vampire dogs in the upcoming sequel and apparently the dogs will be of the same type of super vampire (ie. The Reapers) as the ones in the last movie, you know the ones with the head splitting act. There is a scene where Kris Kristofferson is bound up and the dog wakes him up, at some point a command is given and the dog’s head splits open as it feigns an attack at Kris. The script sounds pretty cool, and I can hardly wait to see the FX on the dogs”.
Source: Dark Horizons