The picture in the woods looks like an ordinary dog photographed at a peculiar angle. I see no T-rex features, and the head does not look like a bear's head at all, only a dog's. JMO.
But that second photo, the "zombie dog", is an example of gross, gruesome, Hollywood-type special effects. American children might enjoy this sort of nauseating stuff in horror shows on TV, but to me it's a total turn-off. E-ew! Yeeeccccchhhhh!
John Carpenter's "The Thing", starring Kurt Russell and filmed in 1982, had some of the grossest, most vomitous alien type of creature effects you'd ever hope to see....not! Ditto the "Alien" series of movies (starring Sigourney Weaver) with the "Xenomorphs" getting grosser and grosser with each subsequent movie. But this ugly Zombie dog could compete with qny or them. Oh, where is the "Creature from the Black Lagoon" when we need him???? Or the Giant Claw? Godzilla, where did you swim off to? "Tarantula", anyone? Where is the Blob?

We have met the aliens and they are us.