A animal that eats the left overs of a dead aniaml. A scaveger are normally insects.
Sunlight< Grass< Small Tropical Bird< Larger Scanvenger Bird< Jaguar or Big Cat
Tyrannosaurus rex has been extinct for at least 66 million years now, so there is really no way to tell for sure. However scientists think it was most likley a hungry scanvenger, and not a flat out hunter.
The answer depends very strongly on the current attachment level between you and your boyfriend and the gift you intend to give him. Many men feel awkward about receiving Valentine's Day gifts. Common presentation techniques include the "I planned something special for you", the "I was just thinking about you and I bought x because it reminds me of you", the "you mean a lot to me, so I wanted to give you x", and the surprise technique where the gift is at home when the boyfriend walks in.