I'm not sure if it's a hellhound. Haven't seen it myself but my 3 year old has been having trouble going to sleep and says that a big bad wolf looks at her through the window some nights. Her grandmother passed away in this house in October. She has seen and talked to her since.
She seems to be sensitive to spirits and the like,more so than myself. I've learned to block them alot,but have had some uneasy feelings in this house since the first time I entered it. Oh and I should mention, my cats have been disappearing and something has killed and taken all but 1 of my chickens.
So whats off for me is i was visited by a higher spirit in the form of a black wolf the other night and generally its a good omen to see them. Wolves do not necessarily actively hunt human beings, the attack's worldwide are very low so its almost okay to exclude being stalked by a wolf. My mom died on mothers day in 1999 and for the longest time i hadn't realized she was gone because i could still see her and talk to here and was almost admitted for it. Crossing over into astral is not something i have a problem with excluding when im having mundane problems and just can't lift my spirit up and out. Basically what i am trying to say is this could be a higher spirit of some sort and the one i have seen look very wicked and malevolent but looks are deceiving. I'm gonna vote this is a higher spirit and that there isn't any real cause for alarm, blessed be.
Im not certain where you live, but here in the US it is mating season for coyotes which makes them far more aggressive and apt to stray into neighborhoods to kill pets and other domestic animals. Sounds as though this might be what is going on with the disappearance of your cats and the killing of your chickens. Some coyotes have interbred with feral dogs with the result that these coy-dogs are larger than the normal coyote and can be mistaken for wolves.
I suppose my main question would be, How does the presence of the wolf make your child feel while it is present? If she is tuned in to the presence of the intangible then she is likely also tuned in to the energies of their presence. Being aware of how you feel when an entity is nearby is a valuable tool.
Benign spirits tend to give off a feeling of comfort and safety, like you are in the middle of a hug or being actively protected. The presence tends to feel warm and comforting even if the form they have should be intimidating.
More neutral beings tend to feel like they are just... well... there. No good or bad feelings, maybe a vague sense of warmth or curiosity, and more often they give off that odd feeling of being observed or watched-but without malice.
Malevolence tends to be immediately recognizeable. It gives a sense of deliberate intimidation, feelings of vulnerability, coldness, and hostility. It is true that some beings, like people, can hide their nature or try to present themselves as something they are not. However being observant of yourself and your emotional (and physical) senses reveals the cracks in the facade.
How does your daughter feel about the wolf presence? After the initial and predictable surprise/fear of the moment, did she feel like the wolf was making her safe, or taking that safety away? When telling you about the wolf and describing it to you does she act nervous or get scared... or does she get excited and happy? Does she close herself off, shrink against herself, hug herself, tuck in her knees, etc... or does she open up, stand up and walk around, smile or laugh, or otherwise seem like she feels safe and relaxed?
There are a lot of small details like this to observe, but doing so when applied to the context of the wolf should go a long ways in determining if this entity is something that would be beneficial to your home or not.