From this article ... the studies the OP is searching for (see links):

What happened to the animals in the studies? This technology has been tried on animals, and in the animal studies done, all the animals died, not immediately from the injection, but months later, from other immune disorders, sepsis and/or cardiac failure. There has never been a long-term successful animal study using this technology. No experimental coronavirus vaccine has succeeded in animal studies . In this study, coronavirus vaccine caused liver inflammation in test animals.

From this article ... the studied the OP are searching for (see links):

What happened to the animals in the studies? This technology has been tried on animals, and in the animal studies done, all the animals died, not immediately from the injection, but months later, from other immune disorders, sepsis and/or cardiac failure. There has never been a long-term successful animal study using this technology. No experimental coronavirus vaccine has succeeded in animal studies . In this study, coronavirus vaccine caused liver inflammation in test animals.