A fun book is Bad Magic by Stephan Zielinski. Kind of an awkward one to find since it's a common title from a while back (2004) at the very start of urban fantasy... and the author didn't appear to have written anything else.

At one point in the book, several of the characters are in South America looking for a jaguar. They ask the synesthetic mage of their group (each character has a different magical background)...

    “Got anything to call a jaguar?”
    Rider purses his lips. “Well … there is one incantation. But I’m not sure it’ll work. Even the most skilled thaumaturges can’t pull it off more than a quarter of the time.”
    Sturgeon shrugs. “May as well try it, Al.”
    Rider nods. “Okay. Be quiet, everybody.” He rolls his head on his neck, holds up his arms. Takes several deep breaths. Opens his mouth. Intones, “Here, kitty kitty kitty … here, kitty…”
    Chloe throws a clot of mud in his face as Rider dissolves into whoops of laughter. Everybody shakes their heads in disgust and they troop off into the green.