Yes. In Palworld v1.0.3, Grizzbolt can get Ferocious through currently verified methods: it is in the standard random pool. Ferocious is in the standard random passive pool in v1.0.3, so it can appear on a caught or bred Grizzbolt and be inherited from parents that have it. The facts behind this answer are graded B and come from 2 registered sources.
Reason
Attack +20%
Rank
3
Random pool
Yes
Other Pals
299
Grizzbolt breeding recipes
1
Fixed passives on Grizzbolt
0
Custom slots available
4
Verified evidence claims behind this verdict
1
Grizzbolt parent pairs with a direct source of Ferocious
1 of 1
Ferocious breeding route for Grizzbolt: 1 of 1 parent pair include a direct source (Grizzbolt).
Why
Ferocious is in the standard random passive pool in v1.0.3, so it can appear on a caught or bred Grizzbolt and be inherited from parents that have it.
How Ferocious can be acquired on Grizzbolt in v1.0.3
Current method
Available for Grizzbolt?
Note
Fixed / innate
No
Grizzbolt is born with no fixed passive.
Random pool (catch or hatch)
Yes
Ferocious is in the standard random pool, so it can appear on a caught or hatched Grizzbolt.
Implant (Surgery Table)
No
Ferocious: no verified item method grants it here.
Breeding inheritance
Yes
Grizzbolt can inherit Ferocious along a verified breeding chain, under the standard passive-inheritance rule this dataset has not independently sourced.
Verdict per requested component on Grizzbolt in Palworld v1.0.3
Ferocious is in the standard random passive pool in v1.0.3, so it can appear on a caught or bred Grizzbolt and be inherited from parents that have it.
B B · 1 source
How it reaches this Pal
Ferocious is in the standard random pool, so it can appear on a caught or hatched Grizzbolt.
299 Pals obtain Ferocious directly in v1.0.3 (Demon Eye, Depresso, Digtoise, Dinossom and Dinossom Lux).
Grizzbolt breeds only from two Grizzbolt parents in v1.0.3, so no other species can bring Ferocious into its line.
5 of 299 shown
What you can do now
Ferocious is in the standard random pool, so it can appear on a caught or hatched Grizzbolt.
Alternative: Grizzbolt can inherit Ferocious along a verified breeding chain, under the standard passive-inheritance rule this dataset has not independently sourced.