Chj, your snuggle is so pretty. I've found Caron to be thinner than other worsted yarns, so normally, I pair it with another yarn. But I don't think you should worry about it, because the animals won't mind.
I'm so glad your shelter is working with you. I've been sending mine to a shelter in Keller, Tx, because my local shelter had never heard of the pet snuggle project, and didn't seem all that interested, either.
Keep up the good work.
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Create in me a clean heart, O God, and renew as steadfast spirit within me. Psalm 51:10