its the rat looking thing and the tripod hopper

It appears to be some sort of fast headcrab type that is on the ground a on the bear in the opening of the Half-Life: Overworld short film. https://www.artstation.com/artwork/aoQd2z (just paste this into your browser it leads to the official Unknown Dino artstation account) (also i did think at first that it was a tripod hopper but then i though about how i could latch onto the head and it wouldn't make sense after i toughed about that, the fast headcrab creature has either hairs on it or quills and probably stabs the victims eye with its two front mandibles, and since it was on the bear that could mean that there is such thing as a headcrab bear or you can call it a zombie bear? you can probably get a better name for it but for where the short takes place one location is self-explanatory its the combine overworld. But the intro area is probably more closer to Russia than Europe.

i like it... feels like something from russia or chernobyl for some reason to me