A colleague sent me this article:
SARS Covid-19
From above sciences paper (Journal of Virology)
What is the source of 2019-nCoV, and did a key intermediate host play an important role in the current 2019-nCoV outbreak? Similarly to SARS-CoV, 2019-nCoV most likely has originated from bats, given its close phylogenetic relationship with other -genus lineage b bat SARS-CoV (Fig. 2). Moreover, 2019-nCoV likely recognizes ACE2 from a diversity of animal species, including palm civets, as its receptor. In the case of SARS-CoV, some of its critical RBM residues were adapted to human ACE2, while some others were adapted to civet ACE2 (26); this type of partial viral adaptation to two host species promoted virus replication and cross-species transmission between the two host species.
In the case of 2019-nCoV, however, there is no strong evidence for adaptive mutations in its critical RBM residues that specifically promote viral binding to civet ACE2. Hence, either palm civets were not intermediate hosts for 2019-nCoV, or they passed 2019-nCoV to humans quickly before 2019-nCoV had any chance to adapt to civet ACE2. Like SARS-CoV, 2019-nCoV will likely replicate inefficiently in mice and rats, ruling them out as intermediate hosts for 2019-nCoV. Moreover, we predict that either 2019-nCoV or laboratory mice and rats would need to be genetically engineered before a robust mouse or rat model for 2019-nCoV would become available.
Pigs, ferrets, cats, and nonhuman primates contain largely favorable 2019-nCoV-contacting residues in their ACE2 and hence may serve as animal models or intermediate hosts for 2019-nCoV. It is worth noting that SARS-CoV was isolated in wild palm civets near Wuhan in 2005 ( 9), and its RBD had already been well adapted to civet ACE2 (except for residue 487). Thus, bats and other wild animals in and near Wuhan should be screened for both SARS-CoV and 2019-nCoV. [My Bold]
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So it is not lions, tigers and bears - but Bats, Cats, and Ferrets; and possibly Pigs.