There are 26 dog breeds whose bite force was documented to exceed 700 PSI.

There are only 3 documented measurements of Grey Wolves bite force in PSI. Two of which were non-official. First one is a controversial one done by Nat Geo biologists, who many claim was ‘’not tested properly.’’ The other two were done by private biologist organisations. The first one, by Nat Geo, gave a result of 406 PSI. The other two, 661 PSI and 580 PSI respectively.

Meaning the highest recorded bite force for grey wolves, stands at ‘’only’’ 661 PSI - for now.

Many biologists believe wolves can bite down much, much harder than that and the estimated bite force is upwards of 800 PSI - up to a maximum of 1,200 PSI - depending on the size of the wolf and its skull.

The reasons for that are mainly the following:

• As a rule, wolves have 18–25% bigger skull to body ratio compared to dogs, meaning that a wolf will have an 18–25% larger skull compared to a dog of the same size.
• There are dogs (specifically 26 dog breeds) who can bite down with the pressure of over 700 PSI, while having much smaller skulls, weaker skull structure and weaker jaw muscle structure than wolves.
• A female spotted Hyenas bite, was measured at 1,091 PSI, while having a similar size skull to an average grey wolf, stronger skull structure and weaker jaw muscle structure.

Here are example pictures below:

Ora, a causa di queste tre ragioni sopra menzionate, i biologi ritengono che un grosso esemplare di lupo grigio, dovrebbe essere in grado di mordere abbastanza facilmente ben oltre 800 PSI - fino a qualsiasi punto intorno ai 1.200 PSI - che considerando i cani che mordono oltre 700 PSI e le Iene che mordono ben oltre 1.000 PSI - sembra non solo realistico ma molto altamente e facilmente possibile.